Remove unnecessary tag, update comments

.gitlab-ci.yml

@@ -28,9 +28,9 @@ image: docker:24
       fi
     - apk add gettext
     - envsubst < ./Dockerfile.$LANGUAGE > Dockerfile
-    # pull the latest build of the targeted versions
+    # pull the latest build of the targeted version of the current branch
     - docker pull "$CI_REGISTRY_IMAGE/${LANGUAGE}/$CI_COMMIT_REF_SLUG:$VERSIONS_TAG" || true
-    # pull the latest build of the target R version in order to re-use it for the targeted SHINY_SERVER_VERSION
+    # pull the latest build of the target version of the main branch
     - docker pull "$CI_REGISTRY_IMAGE/${LANGUAGE}:$VERSIONS_TAG" || true
     # pull the latest build of this branch
     - docker pull "$CI_REGISTRY_IMAGE/${LANGUAGE}/$CI_COMMIT_REF_SLUG:latest" || true
@@ -41,7 +41,6 @@ image: docker:24
       --build-arg SHINY_SERVER_VERSION
       --cache-from "$CI_REGISTRY_IMAGE/${LANGUAGE}/$CI_COMMIT_REF_SLUG:$VERSIONS_TAG"
       --cache-from "$CI_REGISTRY_IMAGE/${LANGUAGE}:$VERSIONS_TAG"
-      --tag "$CI_REGISTRY_IMAGE/${LANGUAGE}/$CI_COMMIT_REF_SLUG:$CI_COMMIT_SHA"
       --tag "$CI_REGISTRY_IMAGE/${LANGUAGE}/$CI_COMMIT_REF_SLUG:latest"
       --tag "$CI_REGISTRY_IMAGE/${LANGUAGE}:$VERSIONS_TAG"
       --tag "$CI_REGISTRY_IMAGE/${LANGUAGE}/$CI_COMMIT_REF_SLUG:$VERSIONS_TAG"
@@ -50,8 +49,6 @@ image: docker:24
       ./
     # push image as latest for the current branch
     - docker push "$CI_REGISTRY_IMAGE/${LANGUAGE}/$CI_COMMIT_REF_SLUG:latest"
-    # push image tagged with its sha
-    - docker push "$CI_REGISTRY_IMAGE/${LANGUAGE}/$CI_COMMIT_REF_SLUG:$CI_COMMIT_SHA"
     # push image tagged with its versions
     - docker push "$CI_REGISTRY_IMAGE/${LANGUAGE}/$CI_COMMIT_REF_SLUG:$VERSIONS_TAG"
     # push image tagged with its versions and the commit sha (debug purpose)