Revert "hardening options"

This reverts commit e8867805fe.

docker-compose.nginx.yml

@@ -1,4 +1,4 @@
-version: "2.4"
+version: "3"
 
 services:
   nginx:
@@ -6,13 +6,7 @@ services:
       - mattermost
     container_name: nginx_mattermost
     image: nginx:${NGINX_IMAGE_TAG}
-    pids_limit: 10
     restart: ${RESTART_POLICY}
-    read_only: true
-    tmpfs:
-      - /var/run
-      - /var/cache
-      - /var/log/nginx
     volumes:
       - ${NGINX_CONFIG_PATH}:/etc/nginx/conf.d:ro
       - ${NGINX_DHPARAMS_FILE}:/dhparams4096.pem

docker-compose.yml

@@ -1,17 +1,12 @@
 # https://docs.docker.com/compose/environment-variables/
 
-version: "2.4"
+version: "3"
 
 services:
   postgres:
     container_name: postgres_mattermost
     image: postgres:${POSTGRES_IMAGE_TAG}
-    pids_limit: 10
     restart: ${RESTART_POLICY}
-    read_only: true
-    tmpfs:
-      - /tmp
-      - /var/run/postgresql
     volumes:
       - ${POSTGRES_DATA_PATH}:/var/lib/postgresql/data
     environment:
@@ -28,11 +23,7 @@ services:
       - postgres
     container_name: mattermost
     image: mattermost/${MATTERMOST_IMAGE}:${MATTERMOST_IMAGE_TAG}
-    pids_limit: 15
     restart: ${RESTART_POLICY}
-    read_only: true
-    tmpfs:
-      - /tmp
     volumes:
       - ${MATTERMOST_CONFIG_PATH}:/mattermost/config:rw
       - ${MATTERMOST_DATA_PATH}:/mattermost/data:rw
@@ -58,8 +49,5 @@ services:
 #    container_name: watchtower
 #    image: containrrr/watchtower:latest
 #    restart: unless-stopped
-#    read_only: true
-#    tmpfs:
-#      - /tmp
 #    volumes:
 #      - /var/run/docker.sock:/var/run/docker.sock