refactor: push image as 'main' instead of 'unstable'

.gitlab-ci.yml

@@ -60,15 +60,15 @@ docker-push:
       else docker login -u "$DOCKER_ID" -p "$DOCKER_HUB_AUTH"
       fi
   script:
-    # every commit on main branch should build and push image as unstable
+    # every commit on main branch should build and push image as main
     # 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 build -t $AURA_IMAGE_NAME:unstable .
-        docker push $AURA_IMAGE_NAME:unstable
+        then docker build -t $AURA_IMAGE_NAME:main .
+        docker push $AURA_IMAGE_NAME:main
       elif expr "$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