fix: image cleanup exludes general main tag

Author: n3rdc4ptn

.github/workflows/clean-main-images.yml

@@ -32,3 +32,4 @@ jobs:
           keep-n-tagged: ${{ env.KEEP_X_IMAGES }}
           delete-ghost-images: true
           delete-partial-images: true
+          exclude-tags: 'main'

.github/workflows/main.yaml

@@ -37,6 +37,7 @@ jobs:
           images: ${{env.REGISTRY}}/${{env.IMAGE_NAME}}
           tags: |
             type=raw,value={{branch}}-{{date 'YYYYMMDDHHmmss'}}
+            type=raw,value={{branch}}
 
       - name: Log in to the Container registry
         uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0