Revert "refactor(DOCKER): Use main tag and main-commit-sha for pushing to docker hub"

This reverts commit 4a587f8f.

.gitlab-ci.yml

@@ -209,23 +209,19 @@ docker-push:
     - docker:dind
   script:
     # every commit on main branch should build and push image as unstable
-    # elseif its a protected branch and push to gitlab registry
+    # elseif its a feature branch build and push to gitlab registry
     # else it is from a tag (enforced by gitlab-ci rules)
     # hint: tags are references independent of branches
     # hint: feature branches must begin with "feat"
     - |
       if [ "$CI_COMMIT_BRANCH" == "$CI_DEFAULT_BRANCH" ]
-        then docker login -u "$DOCKER_ID" -p "$DOCKER_HUB_AUTH"
-        docker build -t $AURA_IMAGE_NAME:main -t $AURA_IMAGE_NAME:main-$CI_COMMIT_SHORT_SHA .
-        docker push --all-tags $AURA_IMAGE_NAME
-      elif [ "$CI_COMMIT_REF_PROTECTED" = "true" ] && [ "$CI_COMMIT_BRANCH" != "$CI_DEFAULT_BRANCH" ]
-        then docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" "$CI_REGISTRY"
-        docker build -t $AURA_IMAGE_NAME -t $CI_REGISTRY_IMAGE:$CI_COMMIT_SHORT_SHA .
-        docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHORT_SHA
-      else
-        docker login -u "$DOCKER_ID" -p "$DOCKER_HUB_AUTH"
-        docker build -t $AURA_IMAGE_NAME -t $AURA_IMAGE_NAME:$CI_COMMIT_TAG .
-        docker push $AURA_IMAGE_NAME:$CI_COMMIT_TAG
+        then docker build -t $AURA_IMAGE_NAME:unstable .
+        docker push $AURA_IMAGE_NAME:unstable 
+      elif expr "$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME" : ^feat > /dev/null
+        then docker build -t $AURA_IMAGE_NAME -t $CI_REGISTRY_IMAGE:$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME .
+        docker push $CI_REGISTRY_IMAGE:$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME
+      else docker build -t $AURA_IMAGE_NAME -t $AURA_IMAGE_NAME:$CI_COMMIT_TAG .
+      docker push $AURA_IMAGE_NAME:$CI_COMMIT_TAG
       fi
   rules:
     - *release-rules