mimick operator-workflows

.github/workflows/publish_charm.yaml

@@ -15,6 +15,7 @@ env:
   charm_working_directory: "./charm"
   charmcraft_ref: feat-12f-django
   charmcraft_repository: weiiwang01/charmcraft
+  paas-app-charmer-oci-name: django-app-image
   tag_prefix:
   working_directory: "./"
 
@@ -292,14 +293,15 @@ jobs:
           echo images: -"${images[@]}"-
           
           for image in "${images[@]}"; do
-            resource_name=$(echo $image | awk -F '/' '{print $NF}' | cut -d ':' -f 1)
-            # This is for paas-app-charmer for Django, as the main image name is named "django-app-image" and
-            # should match the main rockcraft.yaml.
-            if [[ ${resource_name} == ${CHARM_NAME} ]] && [[ " ${resources[@]} " =~ " django-app-image " ]]; then
-                resource_name=django-app
+            if [[ "${{ paas-app-charmer-oci-name }}" != "" ]]; then
+                # This is for paas-app-charmer . The main image name (resource oci in charmcraft.yaml) is
+                # defined with the env variable paas-app-charmer-oci-name, and corresponds to the main
+                # image in rockcraft.yaml.
+                resource_name="{{ paas-app-charmer-oci-name }}"
+            else
+                resource_name=$(echo $image | awk -F '/' '{print $NF}' | cut -d ':' -f 1)-image
             fi
-            resource=${resource_name}-image
-            echo resource: -"${resource}"-
+            
             if [[ " ${resources[@]} " =~ " $resource " ]]; then
               docker pull $image
               image_id=$(docker images $image --format "{{.ID}}")