diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers
index 99d70c99..49f63ddf 100755
--- a/group_vars/matrix_servers
+++ b/group_vars/matrix_servers
@@ -143,7 +143,7 @@ matrix_appservice_webhooks_systemd_required_services_list: |
 # We don't enable bridges by default.
 matrix_appservice_slack_enabled: false
 
-matrix_appservice_slack_container_self_build: "{{ matrix_architecture != 'amd64' }}"
+matrix_appservice_slack_container_image_self_build: "{{ matrix_architecture != 'amd64' }}"
 
 # Normally, matrix-nginx-proxy is enabled and nginx can reach matrix-appservice-slack over the container network.
 # If matrix-nginx-proxy is not enabled, or you otherwise have a need for it, you can expose
@@ -185,7 +185,7 @@ matrix_appservice_slack_database_password: "{{ '%s' | format(matrix_synapse_maca
 # We don't enable bridges by default.
 matrix_appservice_irc_enabled: false
 
-matrix_appservice_irc_container_self_build: "{{ matrix_architecture != 'amd64' }}"
+matrix_appservice_irc_container_image_self_build: "{{ matrix_architecture != 'amd64' }}"
 
 # Normally, matrix-nginx-proxy is enabled and nginx can reach matrix-appservice-irc over the container network.
 # If matrix-nginx-proxy is not enabled, or you otherwise have a need for it, you can expose
@@ -459,8 +459,8 @@ matrix_mautrix_signal_login_shared_secret: "{{ matrix_synapse_ext_password_provi
 matrix_mautrix_signal_database_engine: 'postgres'
 matrix_mautrix_signal_database_password: "{{ '%s' | format(matrix_synapse_macaroon_secret_key) | password_hash('sha512', 'mau.signal.db') | to_uuid }}"
 
-matrix_mautrix_signal_container_self_build: "{{ matrix_architecture not in ['amd64', 'arm64'] }}"
-matrix_mautrix_signal_daemon_container_self_build: "{{ matrix_architecture != 'amd64' }}"
+matrix_mautrix_signal_container_image_self_build: "{{ matrix_architecture not in ['amd64', 'arm64'] }}"
+matrix_mautrix_signal_daemon_container_image_self_build: "{{ matrix_architecture != 'amd64' }}"
 
 ######################################################################
 #
@@ -478,9 +478,9 @@ matrix_mautrix_signal_daemon_container_self_build: "{{ matrix_architecture != 'a
 matrix_mautrix_telegram_enabled: false
 
 # Images are multi-arch (amd64 and arm64, but not arm32).
-matrix_mautrix_telegram_container_self_build: "{{ matrix_architecture not in ['arm64', 'amd64'] }}"
-matrix_telegram_lottieconverter_container_self_build: "{{ matrix_architecture not in ['arm64', 'amd64'] }}"
-matrix_telegram_lottieconverter_container_self_build_mask_arch: "{{ matrix_architecture != 'amd64' }}"
+matrix_mautrix_telegram_container_image_self_build: "{{ matrix_architecture not in ['arm64', 'amd64'] }}"
+matrix_telegram_lottieconverter_container_image_self_build: "{{ matrix_architecture not in ['arm64', 'amd64'] }}"
+matrix_telegram_lottieconverter_container_image_self_build_mask_arch: "{{ matrix_architecture != 'amd64' }}"
 
 matrix_mautrix_telegram_systemd_required_services_list: |
   {{
@@ -938,7 +938,7 @@ matrix_bot_matrix_reminder_bot_systemd_required_services_list: |
 # Postgres is the default, except if not using `matrix_postgres` (internal postgres)
 matrix_bot_matrix_reminder_bot_database_engine: "{{ 'postgres' if matrix_postgres_enabled else 'sqlite' }}"
 matrix_bot_matrix_reminder_bot_database_password: "{{ '%s' | format(matrix_synapse_macaroon_secret_key) | password_hash('sha512', 'reminder.bot.db') | to_uuid }}"
-matrix_bot_matrix_reminder_bot_container_self_build: "{{ matrix_architecture != 'amd64' }}"
+matrix_bot_matrix_reminder_bot_container_image_self_build: "{{ matrix_architecture != 'amd64' }}"
 
 ######################################################################
 #
@@ -1948,7 +1948,7 @@ matrix_synapse_admin_enabled: false
 # Synapse Admin's HTTP port to the local host.
 matrix_synapse_admin_container_http_host_bind_port: "{{ '' if matrix_nginx_proxy_enabled else '127.0.0.1:8766' }}"
 
-matrix_synapse_admin_container_self_build: "{{ matrix_architecture != 'amd64' }}"
+matrix_synapse_admin_container_image_self_build: "{{ matrix_architecture != 'amd64' }}"
 
 ######################################################################
 #
diff --git a/roles/matrix-bot-matrix-reminder-bot/defaults/main.yml b/roles/matrix-bot-matrix-reminder-bot/defaults/main.yml
index 3e955673..419e3cca 100644
--- a/roles/matrix-bot-matrix-reminder-bot/defaults/main.yml
+++ b/roles/matrix-bot-matrix-reminder-bot/defaults/main.yml
@@ -3,7 +3,7 @@
 
 matrix_bot_matrix_reminder_bot_enabled: true
 
-matrix_bot_matrix_reminder_bot_container_self_build: false
+matrix_bot_matrix_reminder_bot_container_image_self_build: false
 matrix_bot_matrix_reminder_bot_docker_repo: "https://github.com/anoadragon453/matrix-reminder-bot.git"
 matrix_bot_matrix_reminder_bot_docker_src_files_path: "{{ matrix_base_data_path }}/matrix-reminder-bot/docker-src"
 
diff --git a/roles/matrix-bot-matrix-reminder-bot/tasks/setup_install.yml b/roles/matrix-bot-matrix-reminder-bot/tasks/setup_install.yml
index dada8167..bd33326f 100644
--- a/roles/matrix-bot-matrix-reminder-bot/tasks/setup_install.yml
+++ b/roles/matrix-bot-matrix-reminder-bot/tasks/setup_install.yml
@@ -46,7 +46,7 @@
     source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
     force_source: "{{ matrix_bot_matrix_reminder_bot_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
     force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_bot_matrix_reminder_bot_docker_image_force_pull }}"
-  when: "not matrix_bot_matrix_reminder_bot_container_self_build|bool"
+  when: "not matrix_bot_matrix_reminder_bot_container_image_self_build|bool"
 
 - name: Ensure matrix-reminder-bot repository is present on self-build
   git:
@@ -54,7 +54,7 @@
     dest: "{{ matrix_bot_matrix_reminder_bot_docker_src_files_path }}"
     force: "yes"
   register: matrix_bot_matrix_reminder_bot_git_pull_results
-  when: "matrix_bot_matrix_reminder_bot_container_self_build|bool"
+  when: "matrix_bot_matrix_reminder_bot_container_image_self_build|bool"
 
 - name: Ensure matrix-reminder-bot image is built
   docker_image:
@@ -66,7 +66,7 @@
       dockerfile: docker/Dockerfile
       path: "{{ matrix_bot_matrix_reminder_bot_docker_src_files_path }}"
       pull: yes
-  when: "matrix_bot_matrix_reminder_bot_container_self_build|bool"
+  when: "matrix_bot_matrix_reminder_bot_container_image_self_build|bool"
 
 - name: Ensure matrix-reminder-bot config installed
   copy:
diff --git a/roles/matrix-bot-matrix-reminder-bot/tasks/validate_config.yml b/roles/matrix-bot-matrix-reminder-bot/tasks/validate_config.yml
index 983e7166..8963a312 100644
--- a/roles/matrix-bot-matrix-reminder-bot/tasks/validate_config.yml
+++ b/roles/matrix-bot-matrix-reminder-bot/tasks/validate_config.yml
@@ -8,3 +8,12 @@
   with_items:
     - "matrix_bot_matrix_reminder_bot_matrix_user_password"
     - "matrix_bot_matrix_reminder_bot_reminders_timezone"
+
+- name: (Deprecation) Catch and report renamed settings
+  fail:
+    msg: >-
+      Your configuration contains a variable, which now has a different name.
+      Please change your configuration to rename the variable (`{{ item.old }}` -> `{{ item.new }}`).
+  when: "item.old in vars"
+  with_items:
+    - {'old': 'matrix_bot_matrix_reminder_bot_container_self_build', 'new': 'matrix_bot_matrix_reminder_bot_container_image_self_build'}
diff --git a/roles/matrix-bridge-appservice-irc/defaults/main.yml b/roles/matrix-bridge-appservice-irc/defaults/main.yml
index 57604b19..25b0a241 100644
--- a/roles/matrix-bridge-appservice-irc/defaults/main.yml
+++ b/roles/matrix-bridge-appservice-irc/defaults/main.yml
@@ -3,7 +3,7 @@
 
 matrix_appservice_irc_enabled: true
 
-matrix_appservice_irc_container_self_build: false
+matrix_appservice_irc_container_image_self_build: false
 matrix_appservice_irc_docker_repo: "https://github.com/matrix-org/matrix-appservice-irc.git"
 matrix_appservice_irc_docker_src_files_path: "{{ matrix_base_data_path }}/appservice-irc/docker-src"
 
diff --git a/roles/matrix-bridge-appservice-irc/tasks/init.yml b/roles/matrix-bridge-appservice-irc/tasks/init.yml
index e1355796..b90d93a5 100644
--- a/roles/matrix-bridge-appservice-irc/tasks/init.yml
+++ b/roles/matrix-bridge-appservice-irc/tasks/init.yml
@@ -3,7 +3,7 @@
 - name: Fail if trying to self-build on Ansible < 2.8
   fail:
     msg: "To self-build the Element image, you should use Ansible 2.8 or higher. See docs/ansible.md"
-  when: "ansible_version.major == 2 and ansible_version.minor < 8 and matrix_appservice_irc_container_self_build and matrix_appservice_irc_enabled"
+  when: "ansible_version.major == 2 and ansible_version.minor < 8 and matrix_appservice_irc_container_image_self_build and matrix_appservice_irc_enabled"
 
 # If the matrix-synapse role is not used, `matrix_synapse_role_executed` won't exist.
 # We don't want to fail in such cases.
diff --git a/roles/matrix-bridge-appservice-irc/tasks/setup_install.yml b/roles/matrix-bridge-appservice-irc/tasks/setup_install.yml
index 75af882a..20714a41 100644
--- a/roles/matrix-bridge-appservice-irc/tasks/setup_install.yml
+++ b/roles/matrix-bridge-appservice-irc/tasks/setup_install.yml
@@ -11,7 +11,7 @@
     - { path: "{{ matrix_appservice_irc_base_path }}", when: true }
     - { path: "{{ matrix_appservice_irc_config_path }}", when: true }
     - { path: "{{ matrix_appservice_irc_data_path }}", when: true }
-    - { path: "{{ matrix_appservice_irc_docker_src_files_path }}", when: "{{ matrix_appservice_irc_container_self_build }}" }
+    - { path: "{{ matrix_appservice_irc_docker_src_files_path }}", when: "{{ matrix_appservice_irc_container_image_self_build }}" }
   when: item.when|bool
 
 - name: Check if an old passkey file already exists
@@ -61,7 +61,7 @@
     source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
     force_source: "{{ matrix_appservice_irc_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
     force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_appservice_irc_docker_image_force_pull }}"
-  when: "matrix_appservice_irc_enabled|bool and not matrix_appservice_irc_container_self_build|bool"
+  when: "matrix_appservice_irc_enabled|bool and not matrix_appservice_irc_container_image_self_build|bool"
 
 - name: Ensure matrix-appservice-irc repository is present when self-building
   git:
@@ -69,7 +69,7 @@
     dest: "{{ matrix_appservice_irc_docker_src_files_path }}"
     force: "yes"
   register: matrix_appservice_irc_git_pull_results
-  when: "matrix_appservice_irc_enabled|bool and matrix_appservice_irc_container_self_build|bool"
+  when: "matrix_appservice_irc_enabled|bool and matrix_appservice_irc_container_image_self_build|bool"
 
 - name: Ensure matrix-appservice-irc Docker image is built
   docker_image:
@@ -81,7 +81,7 @@
       dockerfile: Dockerfile
       path: "{{ matrix_appservice_irc_docker_src_files_path }}"
       pull: yes
-  when: "matrix_appservice_irc_enabled|bool and matrix_appservice_irc_container_self_build|bool and matrix_appservice_irc_git_pull_results.changed"
+  when: "matrix_appservice_irc_enabled|bool and matrix_appservice_irc_container_image_self_build|bool and matrix_appservice_irc_git_pull_results.changed"
 
 - name: Ensure Matrix Appservice IRC config installed
   copy:
diff --git a/roles/matrix-bridge-appservice-irc/tasks/validate_config.yml b/roles/matrix-bridge-appservice-irc/tasks/validate_config.yml
index bd08427c..303f2640 100644
--- a/roles/matrix-bridge-appservice-irc/tasks/validate_config.yml
+++ b/roles/matrix-bridge-appservice-irc/tasks/validate_config.yml
@@ -33,3 +33,4 @@
   when: "item.old in vars"
   with_items:
     - {'old': 'matrix_appservice_irc_container_expose_client_server_api_port', 'new': '<superseded by matrix_appservice_irc_container_http_host_bind_port>'}
+    - {'old': 'matrix_appservice_irc_container_self_build', 'new': 'matrix_appservice_irc_container_image_self_build'}
diff --git a/roles/matrix-bridge-appservice-slack/defaults/main.yml b/roles/matrix-bridge-appservice-slack/defaults/main.yml
index 4f4d5e2f..0a578b41 100644
--- a/roles/matrix-bridge-appservice-slack/defaults/main.yml
+++ b/roles/matrix-bridge-appservice-slack/defaults/main.yml
@@ -3,7 +3,7 @@
 
 matrix_appservice_slack_enabled: true
 
-matrix_appservice_slack_container_self_build: false
+matrix_appservice_slack_container_image_self_build: false
 matrix_appservice_slack_docker_repo: "https://github.com/matrix-org/matrix-appservice-slack.git"
 matrix_appservice_slack_docker_src_files_path: "{{ matrix_base_data_path }}/appservice-slack/docker-src"
 
diff --git a/roles/matrix-bridge-appservice-slack/tasks/init.yml b/roles/matrix-bridge-appservice-slack/tasks/init.yml
index f6aada6d..7f251ec5 100644
--- a/roles/matrix-bridge-appservice-slack/tasks/init.yml
+++ b/roles/matrix-bridge-appservice-slack/tasks/init.yml
@@ -3,7 +3,7 @@
 - name: Fail if trying to self-build on Ansible < 2.8
   fail:
     msg: "To self-build the Element image, you should use Ansible 2.8 or higher. See docs/ansible.md"
-  when: "ansible_version.major == 2 and ansible_version.minor < 8 and matrix_appservice_slack_container_self_build and matrix_appservice_slack_enabled"
+  when: "ansible_version.major == 2 and ansible_version.minor < 8 and matrix_appservice_slack_container_image_self_build and matrix_appservice_slack_enabled"
 
 # If the matrix-synapse role is not used, `matrix_synapse_role_executed` won't exist.
 # We don't want to fail in such cases.
diff --git a/roles/matrix-bridge-appservice-slack/tasks/setup_install.yml b/roles/matrix-bridge-appservice-slack/tasks/setup_install.yml
index b170fcb8..8c5a1eed 100644
--- a/roles/matrix-bridge-appservice-slack/tasks/setup_install.yml
+++ b/roles/matrix-bridge-appservice-slack/tasks/setup_install.yml
@@ -11,7 +11,7 @@
     - { path: "{{ matrix_appservice_slack_base_path }}", when: true }
     - { path: "{{ matrix_appservice_slack_config_path }}", when: true }
     - { path: "{{ matrix_appservice_slack_data_path }}", when: true }
-    - { path: "{{ matrix_appservice_slack_docker_src_files_path }}", when: "{{ matrix_appservice_slack_container_self_build }}" }
+    - { path: "{{ matrix_appservice_slack_docker_src_files_path }}", when: "{{ matrix_appservice_slack_container_image_self_build }}" }
   when: item.when|bool
 
 - set_fact:
@@ -37,7 +37,7 @@
     source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
     force_source: "{{ matrix_appservice_slack_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
     force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_appservice_slack_docker_image_force_pull }}"
-  when: "not matrix_appservice_slack_container_self_build|bool"
+  when: "not matrix_appservice_slack_container_image_self_build|bool"
 
 - name: Ensure matrix-appservice-slack repository is present when self-building
   git:
@@ -45,7 +45,7 @@
     dest: "{{ matrix_appservice_slack_docker_src_files_path }}"
     force: "yes"
   register: matrix_appservice_slack_git_pull_results
-  when: "matrix_appservice_slack_container_self_build|bool"
+  when: "matrix_appservice_slack_container_image_self_build|bool"
 
 - name: Ensure matrix-appservice-slack Docker image is built
   docker_image:
@@ -57,7 +57,7 @@
       dockerfile: Dockerfile
       path: "{{ matrix_appservice_slack_docker_src_files_path }}"
       pull: yes
-  when: "matrix_appservice_slack_container_self_build|bool and matrix_appservice_slack_git_pull_results.changed"
+  when: "matrix_appservice_slack_container_image_self_build|bool and matrix_appservice_slack_git_pull_results.changed"
 
 - name: Ensure Matrix Appservice Slack config installed
   copy:
diff --git a/roles/matrix-bridge-appservice-slack/tasks/validate_config.yml b/roles/matrix-bridge-appservice-slack/tasks/validate_config.yml
index e02c6ab0..1866c312 100644
--- a/roles/matrix-bridge-appservice-slack/tasks/validate_config.yml
+++ b/roles/matrix-bridge-appservice-slack/tasks/validate_config.yml
@@ -11,3 +11,12 @@
     - "matrix_appservice_slack_homeserver_url"
     - "matrix_appservice_slack_homeserver_token"
     - "matrix_appservice_slack_id_token"
+
+- name: (Deprecation) Catch and report renamed settings
+  fail:
+    msg: >-
+      Your configuration contains a variable, which now has a different name.
+      Please change your configuration to rename the variable (`{{ item.old }}` -> `{{ item.new }}`).
+  when: "item.old in vars"
+  with_items:
+    - {'old': 'matrix_appservice_slack_container_self_build', 'new': 'matrix_appservice_slack_container_image_self_build'}
diff --git a/roles/matrix-bridge-mautrix-signal/defaults/main.yml b/roles/matrix-bridge-mautrix-signal/defaults/main.yml
index 6e0a9918..9eebedd7 100644
--- a/roles/matrix-bridge-mautrix-signal/defaults/main.yml
+++ b/roles/matrix-bridge-mautrix-signal/defaults/main.yml
@@ -3,7 +3,7 @@
 
 matrix_mautrix_signal_enabled: true
 
-matrix_mautrix_signal_container_self_build: false
+matrix_mautrix_signal_container_image_self_build: false
 matrix_mautrix_signal_docker_repo: "https://mau.dev/mautrix/signal.git"
 matrix_mautrix_signal_docker_src_files_path: "{{ matrix_base_data_path }}/mautrix-signal/docker-src"
 
@@ -13,7 +13,7 @@ matrix_mautrix_signal_daemon_version: latest
 matrix_mautrix_signal_docker_image: "dock.mau.dev/mautrix/signal:{{ matrix_mautrix_signal_version }}"
 matrix_mautrix_signal_docker_image_force_pull: "{{ matrix_mautrix_signal_docker_image.endswith(':latest') }}"
 
-matrix_mautrix_signal_daemon_container_self_build: false
+matrix_mautrix_signal_daemon_container_image_self_build: false
 matrix_mautrix_signal_daemon_docker_repo: "https://mau.dev/maunium/signald.git"
 matrix_mautrix_signal_daemon_docker_src_files_path: "{{ matrix_base_data_path }}/mautrix-signald/docker-src"
 
diff --git a/roles/matrix-bridge-mautrix-signal/tasks/setup_install.yml b/roles/matrix-bridge-mautrix-signal/tasks/setup_install.yml
index 88710868..bc6331ac 100644
--- a/roles/matrix-bridge-mautrix-signal/tasks/setup_install.yml
+++ b/roles/matrix-bridge-mautrix-signal/tasks/setup_install.yml
@@ -14,7 +14,7 @@
     source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
     force_source: "{{ matrix_mautrix_signal_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
     force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_mautrix_signal_docker_image_force_pull }}"
-  when: "not matrix_mautrix_signal_container_self_build|bool"
+  when: "not matrix_mautrix_signal_container_image_self_build|bool"
 
 
 - name: Ensure Mautrix Signal repository is present on self-build
@@ -23,7 +23,7 @@
     dest: "{{ matrix_mautrix_signal_docker_src_files_path }}"
     force: "yes"
   register: matrix_mautrix_signal_git_pull_results
-  when: "matrix_mautrix_signal_container_self_build|bool"
+  when: "matrix_mautrix_signal_container_image_self_build|bool"
 
 - name: Ensure Mautrix Signal image is built
   docker_image:
@@ -35,7 +35,7 @@
       dockerfile: Dockerfile
       path: "{{ matrix_mautrix_signal_docker_src_files_path }}"
       pull: yes
-  when: "matrix_mautrix_signal_container_self_build|bool"
+  when: "matrix_mautrix_signal_container_image_self_build|bool"
 
 
 - name: Ensure Mautrix Signal Daemon image is pulled
@@ -44,7 +44,7 @@
     source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
     force_source: "{{ matrix_mautrix_signal_daemon_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
     force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_mautrix_signal_daemon_docker_image_force_pull }}"
-  when: matrix_mautrix_signal_enabled and not matrix_mautrix_signal_daemon_container_self_build|bool
+  when: matrix_mautrix_signal_enabled and not matrix_mautrix_signal_daemon_container_image_self_build|bool
   register: matrix_mautrix_signal_daemon_pull_results
 
 - name: Ensure Mautrix Signal Daemon repository is present on self-build
@@ -53,7 +53,7 @@
     dest: "{{ matrix_mautrix_signal_daemon_docker_src_files_path }}"
     force: "yes"
   register: matrix_mautrix_signal_daemon_git_pull_results
-  when: "matrix_mautrix_signal_daemon_container_self_build|bool"
+  when: "matrix_mautrix_signal_daemon_container_image_self_build|bool"
 
 - name: Ensure Mautrix Signal Daemon image is built
   docker_image:
@@ -65,7 +65,7 @@
       dockerfile: Dockerfile
       path: "{{ matrix_mautrix_signal_daemon_docker_src_files_path }}"
       pull: yes
-  when: "matrix_mautrix_signal_daemon_container_self_build|bool"
+  when: "matrix_mautrix_signal_daemon_container_image_self_build|bool"
 
 - name: Ensure Mautrix Signal paths exist
   file:
diff --git a/roles/matrix-bridge-mautrix-signal/tasks/validate_config.yml b/roles/matrix-bridge-mautrix-signal/tasks/validate_config.yml
index 100af3f8..108ac044 100644
--- a/roles/matrix-bridge-mautrix-signal/tasks/validate_config.yml
+++ b/roles/matrix-bridge-mautrix-signal/tasks/validate_config.yml
@@ -26,3 +26,5 @@
     - {'old': 'matrix_mautrix_signal_db_port', 'new': 'matrix_mautrix_signal_database_port'}
     - {'old': 'matrix_mautrix_signal_db_url', 'new': 'matrix_mautrix_signal_database_connection_string'}
     - {'old': 'matrix_mautrix_signal_configuration_permissions', 'new': '<superseded by matrix_mautrix_signal_configuration_extension_yaml>'}
+    - {'old': 'matrix_mautrix_signal_container_self_build', 'new': 'matrix_mautrix_signal_container_image_self_build'}
+    - {'old': 'matrix_mautrix_signal_daemon_container_self_build', 'new': 'matrix_mautrix_signal_daemon_container_image_self_build'}
diff --git a/roles/matrix-bridge-mautrix-telegram/defaults/main.yml b/roles/matrix-bridge-mautrix-telegram/defaults/main.yml
index 1995a7b7..7e7ee0a6 100644
--- a/roles/matrix-bridge-mautrix-telegram/defaults/main.yml
+++ b/roles/matrix-bridge-mautrix-telegram/defaults/main.yml
@@ -3,13 +3,13 @@
 
 matrix_mautrix_telegram_enabled: true
 
-matrix_telegram_lottieconverter_container_self_build: false
-matrix_telegram_lottieconverter_container_self_build_mask_arch: false
+matrix_telegram_lottieconverter_container_image_self_build: false
+matrix_telegram_lottieconverter_container_image_self_build_mask_arch: false
 matrix_telegram_lottieconverter_docker_repo: "https://mau.dev/tulir/lottieconverter.git"
 matrix_telegram_lottieconverter_docker_src_files_path: "{{ matrix_base_data_path }}/lotticonverter/docker-src"
 matrix_telegram_lottieconverter_docker_image: "dock.mau.dev/tulir/lottieconverter:alpine-3.14" # needs to be ajusted according to FROM clause of Dockerfile of mautrix-telegram
 
-matrix_mautrix_telegram_container_self_build: false
+matrix_mautrix_telegram_container_image_self_build: false
 matrix_mautrix_telegram_docker_repo: "https://mau.dev/mautrix/telegram.git"
 matrix_mautrix_telegram_docker_src_files_path: "{{ matrix_base_data_path }}/mautrix-telegram/docker-src"
 
diff --git a/roles/matrix-bridge-mautrix-telegram/tasks/init.yml b/roles/matrix-bridge-mautrix-telegram/tasks/init.yml
index bf903a57..662ea1c3 100644
--- a/roles/matrix-bridge-mautrix-telegram/tasks/init.yml
+++ b/roles/matrix-bridge-mautrix-telegram/tasks/init.yml
@@ -3,7 +3,7 @@
 - name: Fail if trying to self-build on Ansible < 2.8
   fail:
     msg: "To self-build the Element image, you should use Ansible 2.8 or higher. See docs/ansible.md"
-  when: "ansible_version.major == 2 and ansible_version.minor < 8 and matrix_mautrix_telegram_container_self_build and matrix_mautrix_telegram_enabled"
+  when: "ansible_version.major == 2 and ansible_version.minor < 8 and matrix_mautrix_telegram_container_image_self_build and matrix_mautrix_telegram_enabled"
 
 - set_fact:
     matrix_systemd_services_list: "{{ matrix_systemd_services_list + ['matrix-mautrix-telegram.service'] }}"
diff --git a/roles/matrix-bridge-mautrix-telegram/tasks/setup_install.yml b/roles/matrix-bridge-mautrix-telegram/tasks/setup_install.yml
index 1e87f1ae..1e34e2cd 100644
--- a/roles/matrix-bridge-mautrix-telegram/tasks/setup_install.yml
+++ b/roles/matrix-bridge-mautrix-telegram/tasks/setup_install.yml
@@ -45,7 +45,7 @@
     - { path: "{{ matrix_mautrix_telegram_base_path }}", when: true }
     - { path: "{{ matrix_mautrix_telegram_config_path }}", when: true }
     - { path: "{{ matrix_mautrix_telegram_data_path }}", when: true }
-    - { path: "{{ matrix_mautrix_telegram_docker_src_files_path }}", when: "{{ matrix_mautrix_telegram_container_self_build }}" }
+    - { path: "{{ matrix_mautrix_telegram_docker_src_files_path }}", when: "{{ matrix_mautrix_telegram_container_image_self_build }}" }
   when: item.when|bool
 
 - name: Ensure Mautrix Telegram image is pulled
@@ -54,7 +54,7 @@
     source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
     force_source: "{{ matrix_mautrix_telegram_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
     force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_mautrix_telegram_docker_image_force_pull }}"
-  when: "not matrix_mautrix_telegram_container_self_build|bool"
+  when: "not matrix_mautrix_telegram_container_image_self_build|bool"
 
 - name: Ensure lottieconverter is present when self-building
   git:
@@ -62,7 +62,7 @@
     dest: "{{ matrix_telegram_lottieconverter_docker_src_files_path }}"
     force: "yes"
   register: matrix_telegram_lottieconverter_git_pull_results
-  when: "matrix_telegram_lottieconverter_container_self_build|bool and matrix_mautrix_telegram_container_self_build|bool"
+  when: "matrix_telegram_lottieconverter_container_image_self_build|bool and matrix_mautrix_telegram_container_image_self_build|bool"
 
 - name: Ensure lottieconverter Docker image is built
   docker_image:
@@ -74,7 +74,7 @@
       dockerfile: Dockerfile
       path: "{{ matrix_telegram_lottieconverter_docker_src_files_path }}"
       pull: yes
-  when: "matrix_telegram_lottieconverter_container_self_build|bool and matrix_telegram_lottieconverter_git_pull_results.changed and matrix_mautrix_telegram_container_self_build|bool"
+  when: "matrix_telegram_lottieconverter_container_image_self_build|bool and matrix_telegram_lottieconverter_git_pull_results.changed and matrix_mautrix_telegram_container_image_self_build|bool"
 
 - name: Ensure matrix-mautrix-telegram repository is present when self-building
   git:
@@ -82,7 +82,7 @@
     dest: "{{ matrix_mautrix_telegram_docker_src_files_path }}"
     force: "yes"
   register: matrix_mautrix_telegram_git_pull_results
-  when: "matrix_mautrix_telegram_container_self_build|bool"
+  when: "matrix_mautrix_telegram_container_image_self_build|bool"
 
 - name: Ensure matrix-mautrix-telegram Docker image is built
   docker_image:
@@ -93,10 +93,10 @@
     build:
       dockerfile: Dockerfile
       path: "{{ matrix_mautrix_telegram_docker_src_files_path }}"
-      pull: "{{ not matrix_telegram_lottieconverter_container_self_build_mask_arch|bool }}"
+      pull: "{{ not matrix_telegram_lottieconverter_container_image_self_build_mask_arch|bool }}"
       args:
         TARGETARCH: ""
-  when: "matrix_mautrix_telegram_container_self_build|bool and matrix_mautrix_telegram_git_pull_results.changed"
+  when: "matrix_mautrix_telegram_container_image_self_build|bool and matrix_mautrix_telegram_git_pull_results.changed"
 
 - name: Check if an old database file already exists
   stat:
diff --git a/roles/matrix-bridge-mautrix-telegram/tasks/validate_config.yml b/roles/matrix-bridge-mautrix-telegram/tasks/validate_config.yml
index 5b1f3b00..2067b97b 100644
--- a/roles/matrix-bridge-mautrix-telegram/tasks/validate_config.yml
+++ b/roles/matrix-bridge-mautrix-telegram/tasks/validate_config.yml
@@ -20,3 +20,6 @@
   when: "item.old in vars"
   with_items:
     - {'old': 'matrix_mautrix_telegram_container_exposed_port_number', 'new': '<superseded by matrix_mautrix_telegram_container_http_host_bind_port>'}
+    - {'old': 'matrix_mautrix_telegram_container_self_build', 'new': 'matrix_mautrix_telegram_container_image_self_build'}
+    - {'old': 'matrix_telegram_lottieconverter_container_self_build', 'new': 'matrix_mautrix_telegram_container_image_self_build'}
+    - {'old': 'matrix_telegram_lottieconverter_container_self_build_mask_arch', 'new': 'matrix_telegram_lottieconverter_container_image_self_build_mask_arch'}
diff --git a/roles/matrix-synapse-admin/defaults/main.yml b/roles/matrix-synapse-admin/defaults/main.yml
index 6d20d20f..db1024fa 100644
--- a/roles/matrix-synapse-admin/defaults/main.yml
+++ b/roles/matrix-synapse-admin/defaults/main.yml
@@ -3,14 +3,14 @@
 
 matrix_synapse_admin_enabled: true
 
-matrix_synapse_admin_container_self_build: false
-matrix_synapse_admin_container_self_build_repo: "https://github.com/Awesome-Technologies/synapse-admin.git"
+matrix_synapse_admin_container_image_self_build: false
+matrix_synapse_admin_container_image_self_build_repo: "https://github.com/Awesome-Technologies/synapse-admin.git"
 
 matrix_synapse_admin_docker_src_files_path: "{{ matrix_base_data_path }}/synapse-admin/docker-src"
 
 matrix_synapse_admin_version: 0.8.4
 matrix_synapse_admin_docker_image: "{{ matrix_synapse_admin_docker_image_name_prefix }}awesometechnologies/synapse-admin:{{ matrix_synapse_admin_version }}"
-matrix_synapse_admin_docker_image_name_prefix: "{{ 'localhost/' if matrix_synapse_admin_container_self_build else matrix_container_global_registry_prefix }}"
+matrix_synapse_admin_docker_image_name_prefix: "{{ 'localhost/' if matrix_synapse_admin_container_image_self_build else matrix_container_global_registry_prefix }}"
 matrix_synapse_admin_docker_image_force_pull: "{{ matrix_synapse_admin_docker_image.endswith(':latest') }}"
 
 # A list of extra arguments to pass to the container
diff --git a/roles/matrix-synapse-admin/tasks/init.yml b/roles/matrix-synapse-admin/tasks/init.yml
index fccc9dfa..3ce5a693 100644
--- a/roles/matrix-synapse-admin/tasks/init.yml
+++ b/roles/matrix-synapse-admin/tasks/init.yml
@@ -3,7 +3,7 @@
 - name: Fail if trying to self-build on Ansible < 2.8
   fail:
     msg: "To self-build the Element image, you should use Ansible 2.8 or higher. See docs/ansible.md"
-  when: "ansible_version.major == 2 and ansible_version.minor < 8 and matrix_synapse_admin_container_self_build and matrix_synapse_admin_enabled"
+  when: "ansible_version.major == 2 and ansible_version.minor < 8 and matrix_synapse_admin_container_image_self_build and matrix_synapse_admin_enabled"
 
 - set_fact:
     matrix_systemd_services_list: "{{ matrix_systemd_services_list + ['matrix-synapse-admin.service'] }}"
diff --git a/roles/matrix-synapse-admin/tasks/setup.yml b/roles/matrix-synapse-admin/tasks/setup.yml
index d54583af..9eac7f90 100644
--- a/roles/matrix-synapse-admin/tasks/setup.yml
+++ b/roles/matrix-synapse-admin/tasks/setup.yml
@@ -10,16 +10,16 @@
     source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
     force_source: "{{ matrix_synapse_admin_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
     force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_synapse_admin_docker_image_force_pull }}"
-  when: "matrix_synapse_admin_enabled|bool and not matrix_synapse_admin_container_self_build|bool"
+  when: "matrix_synapse_admin_enabled|bool and not matrix_synapse_admin_container_image_self_build|bool"
 
 - name: Ensure matrix-synapse-admin repository is present when self-building
   git:
-    repo: "{{ matrix_synapse_admin_container_self_build_repo }}"
+    repo: "{{ matrix_synapse_admin_container_image_self_build_repo }}"
     dest: "{{ matrix_synapse_admin_docker_src_files_path }}"
     version: "{{ matrix_synapse_admin_docker_image.split(':')[1] }}"
     force: "yes"
   register: matrix_synapse_admin_git_pull_results
-  when: "matrix_synapse_admin_enabled|bool and matrix_synapse_admin_container_self_build|bool"
+  when: "matrix_synapse_admin_enabled|bool and matrix_synapse_admin_container_image_self_build|bool"
 
 - name: Ensure matrix-synapse-admin Docker image is built
   docker_image:
@@ -31,7 +31,7 @@
       dockerfile: Dockerfile
       path: "{{ matrix_synapse_admin_docker_src_files_path }}"
       pull: yes
-  when: "matrix_synapse_admin_enabled|bool and matrix_synapse_admin_container_self_build|bool"
+  when: "matrix_synapse_admin_enabled|bool and matrix_synapse_admin_container_image_self_build|bool"
 
 - name: Ensure matrix-synapse-admin.service installed
   template:
diff --git a/roles/matrix-synapse-admin/tasks/validate_config.yml b/roles/matrix-synapse-admin/tasks/validate_config.yml
index e08680e0..20a5c170 100644
--- a/roles/matrix-synapse-admin/tasks/validate_config.yml
+++ b/roles/matrix-synapse-admin/tasks/validate_config.yml
@@ -8,3 +8,5 @@
   when: "item.old in vars"
   with_items:
     - {'old': 'matrix_synapse_admin_docker_repo', 'new': 'matrix_synapse_admin_container_self_build_repo'}
+    - {'old': 'matrix_synapse_admin_container_self_build', 'new': 'matrix_synapse_admin_container_image_self_build'}
+    - {'old': 'matrix_synapse_admin_container_self_build_repo', 'new': 'matrix_synapse_admin_container_image_self_build_repo'}