[Significant Changes] Added build_command.sh to simplify the .gitlab-ci.yml. Added LOG_FILE variable to make the enrypoing 'tail -f' command more useful.

.gitlab-ci.yml

@@ -1,3 +1,6 @@
+variables:
+  LATEST_VER: "22.04"
+
 build_22:
   variables:
     UBUNTU_VER: "22.04"

Dockerfile

@@ -27,4 +27,6 @@ RUN locale-gen en_US.UTF-8
 
 COPY scripts/entrypoint.sh /entrypoint.sh
 
+ENV LOG_FILE /dev/null
+
 CMD [ "/entrypoint.sh" ]

build_command.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env sh
+set -x
+
+export BUILDER_NAME=`docker buildx create --use`
+docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+
+# Following only adds the :latest tag if it is the latest LTS version.
+if [ "$LATEST_VER" = "$UBUNTU_VER" ];
+then
+    docker buildx build . \
+        -f Dockerfile \
+        --build-arg UBUNTU_VER=$UBUNTU_VER \
+        -t $CI_REGISTRY/docker/$CI_PROJECT_NAME:ubuntu-$UBUNTU_VER:`date "+%Y-%m-%d"` \
+        -t $CI_REGISTRY/docker/$CI_PROJECT_NAME:ubuntu-$UBUNTU_VER:latest \
+        -t $CI_REGISTRY/docker/$CI_PROJECT_NAME:$UBUNTU_VER \
+        --platform $PLATFORMS \
+        --push --provenance false
+else
+    docker buildx build . \
+        -f Dockerfile \
+        --build-arg UBUNTU_VER=$UBUNTU_VER \
+        -t $CI_REGISTRY/docker/$CI_PROJECT_NAME:ubuntu-$UBUNTU_VER:`date "+%Y-%m-%d"` \
+        -t $CI_REGISTRY/docker/$CI_PROJECT_NAME:ubuntu-$UBUNTU_VER:latest \
+        -t $CI_REGISTRY/docker/$CI_PROJECT_NAME:$UBUNTU_VER \
+        -t $CI_REGISTRY/docker/$CI_PROJECT_NAME:latest \
+        --platform $PLATFORMS \
+        --push --provenance false
+fi
+
+docker buildx prune --builder $BUILDER_NAME -f
+docker buildx stop $BUILDER_NAME
+docker buildx rm $BUILDER_NAME

scripts/entrypoint.sh

@@ -8,6 +8,8 @@ term_handler() {
 
 trap 'kill ${!}; term_handler' SIGTERM
 
+touch $LOG_FILE
+
 $USER_COMMAND_INIT &
 
-tail -f /dev/null & wait ${!}
+tail -f $LOG_FILE & wait ${!}