feat(ci): Tag final images by branch name

Signed-off-by: Christoph Heiss <contact@christoph-heiss.at>

.github/workflows/build.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - main
+      - dev
 
 jobs:
   lint-and-build:
@@ -36,7 +37,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       - uses: docker/build-push-action@v3
         with:
+          push: true
           context: .
           tags: |
-            ghcr.io/${{ github.repository }}:latest
-          push: ${{ github.ref == 'refs/heads/main' }}
+            ghcr.io/${{ github.repository }}:${{ github.ref_name }}