refactor: update docker login command in ci_staging.gitlab-ci.yml to use...

refactor: update docker login command in ci_staging.gitlab-ci.yml to use password-stdin for security

capif/templates/ci_staging.gitlab-ci.yml

@@ -177,7 +177,7 @@ staging_grype_cvs:
       cd services/$IMAGE_NAME/
       
       # Login to Docker registry
-      docker login --username $CI_REGISTRY_USER --password $CAPIF_DOCKER_REGISTRY $CI_REGISTRY
+      echo "$CI_JOB_TOKEN" | docker login $CI_REGISTRY --username $CI_REGISTRY_USER --password-stdin
       
       # Build Docker image
       docker build -t $CI_REGISTRY/ocf/capif/$CI_COMMIT_REF_SLUG/$IMAGE_LOWER:$CI_COMMIT_REF_SLUG .