feat: autoclean tmp container image on MR

templates/job/container/build.yml

@@ -15,3 +15,56 @@
 container:build:
   extends:  .container:build
   stage:    package
+
+# Purge of tempory images
+# docs : 
+# - https://docs.gitlab.com/ee/user/packages/container_registry/#delete-images
+# - https://docs.gitlab.com/ee/user/packages/container_registry/#delete-images-using-gitlab-cicd
+#
+# This job prune the container's tmp images
+# - merge trigger : delete all images of the merged branch
+
+
+container:purge:
+  extends:  .base_tpl
+  image:    buildpack-deps:buster-curl
+  stage:    clean
+  rules:
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+  variables:
+    REG_SHA256: ade837fc5224acd8c34732bf54a94f579b47851cc6a7fd5899a98386b782e228
+    REG_VERSION: 0.16.1
+    REG_OPTS: "-d --insecure --auth-url ${CI_REGISTRY} -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD}"
+  before_script:
+    - curl --fail --show-error --location "https://github.com/genuinetools/reg/releases/download/v$REG_VERSION/reg-linux-amd64" --output /usr/local/bin/reg
+    - echo "$REG_SHA256  /usr/local/bin/reg" | sha256sum -c -
+    - chmod a+x /usr/local/bin/reg
+    - cd ${working_directory}
+  script: |  
+    if (echo ${CI_COMMIT_TITLE} |  grep "Merge branch '.*' into 'master'"); then
+      echo "It's a merge commit \o/"
+      SOURCE_BRANCH=$(echo $CI_COMMIT_TITLE |  cut -d "'" -f 2)
+      echo "Source branch of the merge ${SOURCE_BRANCH}"
+
+      # Namespace
+      container_namespace="${CI_PROJECT_PATH}/branch-${SOURCE_BRANCH//\//_}"
+
+      # Image Name
+      if [[ -n "${IMAGE_NAME}" ]]; then
+        container_image_name="/${IMAGE_NAME}"
+      else
+        container_image_name=""
+      fi
+      full_image_name=${container_namespace}${container_image_name}
+
+      # Clean Repository
+      echo "🧹 Clean tmp images"
+      echo "  🏭 registry : ${CI_REGISTRY}"
+      echo "  📦     name : ${full_image_name}"
+      for tag in $(reg tags ${REG_OPTS} ${full_image_name}); do
+        echo "      🏷️ tags : ${tag}"
+        reg rm ${REG_OPTS} ${full_image_name}:${tag}
+      done
+    else
+      echo "Nothing to purge in the GitLab container registry !"
+    fi

templates/stages.yml

@@ -6,6 +6,7 @@ stages:
   - test
   - delivery
   - deploy
+  - clean
 
 variables:
   working_directory: "${CI_PROJECT_DIR}"
@@ -17,6 +18,9 @@ variables:
   JAVA_VERSION: "11"
   JDK_TYPE: "openjdk"
   CONTAINER_CACHE_TTL: 6h
+  CI_DEBUG_TRACE: "false"
+  # true for activate CI debug tracing
+
 
 
 # /!\ removed soon /!\