Prepare timestamp and add debug printout

Signed-off-by: Federico Busetti <[email protected]>

Author: febus982

.gitlab_ci/_templates.yml

@@ -52,9 +52,9 @@ variables:
   services:
     - docker:$DOCKER_VERSION-dind
   script:
-#    - desired_format="%s"
-#    - export UNIX_TIMESTAMP=$(date -d "$CI_COMMIT_TIMESTAMP" + "$desired_format")
+#    - export UNIX_TIMESTAMP=$(date -d "$CI_COMMIT_TIMESTAMP" -D "%Y-%m-%dT%H:%M:%SZ"+%s)
 #    - echo "Unix timestamp - $UNIX_TIMESTAMP"
+    - echo "Tagging $DOCKER_IMAGE_NAME:$PROMOTED_ENVIRONMENT-$CI_COMMIT_TIMESTAMP from $DOCKER_IMAGE_FULL_TAG"
     - docker buildx imagetools create
       --annotation "index:org.opencontainers.image.version=$CI_COMMIT_SHORT_SHA"
       --annotation "index:org.opencontainers.image.revision=$CI_COMMIT_SHA"