fix: ensure Docker images are pushed to GHCR

- Change push condition from conditional to always true for main branch
- Add debug step to print tags and labels information
- Fix issue where images were not being published to GHCR despite successful build

Author: bobo334

.github/workflows/docker.yml

@@ -47,12 +47,17 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
             type=sha,prefix=
 
+      - name: Print tags info
+        run: |
+          echo "Tags: ${{ steps.meta.outputs.tags }}"
+          echo "Labels: ${{ steps.meta.outputs.labels }}"
+
       - name: Build and push Docker image
         uses: docker/build-push-action@v5
         with:
           context: .
           platforms: linux/amd64,linux/arm64
-          push: ${{ github.event_name != 'pull_request' }}
+          push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha