Restructure entry point

full/Dockerfile

@@ -7,6 +7,4 @@ RUN set -x \
         openssl-dev \
         perl \
         python3
-COPY znc-entrypoint.sh /
-
-ENTRYPOINT ["/znc-entrypoint.sh"]
+COPY znc-build-modules.sh /

full/znc-build-modules.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# Build modules from source.
+if [ -d "${DATADIR}/modules" ]; then
+    cd "${DATADIR}/modules" || exit 1
+
+    # Find module sources.
+    modules=$(find . -name "*.cpp")
+
+    if [ -n "$modules" ]; then
+        # Build modules.
+        echo "Building modules $modules..."
+        /opt/znc/bin/znc-buildmod $modules || exit 1
+    fi
+fi
+

full/znc-entrypoint.sh

@@ -1,22 +0,0 @@
-#!/bin/sh
-
-# Options.
-DATADIR="/znc-data"
-
-# Build modules from source.
-if [ -d "${DATADIR}/modules" ]; then
-    pushd "${DATADIR}/modules" > /dev/null || exit 1
-
-    # Find module sources.
-    modules=$(find "${DATADIR}/modules" -name "*.cpp")
-
-    if [ -n "$modules" ]; then
-        # Build modules.
-        echo "Building modules $modules..."
-        /opt/znc/bin/znc-buildmod $modules
-    fi
-
-    popd > /dev/null
-fi
-
-exec /opt/znc/bin/znc -f -d /znc-data $@

small/Dockerfile

@@ -6,7 +6,7 @@ ENV ZNC_VERSION 1.6.4
 # :extmodules image installs perl and python3 again, making these modules loadable.
 
 # musl silently doesn't support AI_ADDRCONFIG yet, and ZNC doesn't support Happy Eyeballs yet.
-# Together they cause very slow connection
+# Together they cause very slow connection.
 ARG CONFIGUREFLAGS="--prefix=/opt/znc --enable-cyrus --enable-perl --enable-python --disable-ipv6"
 ARG MAKEFLAGS=""
 
@@ -41,9 +41,11 @@ RUN set -x \
     && apk del build-dependencies \
     && cd / && rm -Rf /znc-src
 
+COPY znc-entrypoint.sh /
+
 USER znc
 VOLUME /znc-data
 
 EXPOSE 6667
 
-ENTRYPOINT ["/opt/znc/bin/znc", "-f", "-d", "/znc-data"]
+ENTRYPOINT ["/znc-entrypoint.sh"]

small/znc-entrypoint.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# Options.
+export DATADIR="/znc-data"
+
+# Make sure $DATADIR is owned by znc user. This effects ownership of the
+# mounted directory on the host machine too.
+chown -R znc:znc "$DATADIR" || exit 1
+chmod 700 "$DATADIR" || exit 2
+
+# Added by znc:full image
+if [ -r /znc-build-modules.sh ]; then
+    /znc-build-modules.sh || exit 3
+fi
+
+exec /opt/znc/bin/znc --foreground --datadir /znc-data "$@"