Merge pull request 'Push to the remote registry only on the main branch' (#165) from push-only-main into main

Reviewed-on: #165

.github/workflows/build.yml

@@ -1,8 +1,6 @@
 name: Build Nginx-based docker image
 on:
   push:
-    branches:
-      - main
 concurrency:
   group: ${{ github.ref }}
   cancel-in-progress: true
@@ -30,7 +28,7 @@ jobs:
         with:
           context: .
           target: deps
-          push: ${{ github.event_name != 'pull_request' }}
+          push: ${{ github.ref == 'refs/heads/main' }}
           tags: ${{ secrets.PRIVATE_REGISTRY_HOST }}/${{ env.GITHUB_REPOSITORY }}:deps
           cache-from: type=registry,ref=${{ secrets.PRIVATE_REGISTRY_HOST }}/${{ env.GITHUB_REPOSITORY }}:deps
           cache-to: type=inline
@@ -40,16 +38,16 @@ jobs:
         with:
           context: .
           target: builder
-          push: ${{ github.event_name != 'pull_request' }}
+          push: ${{ github.ref == 'refs/heads/main' }}
           tags: ${{ secrets.PRIVATE_REGISTRY_HOST }}/${{ env.GITHUB_REPOSITORY }}:builder
           cache-from: type=registry,ref=${{ secrets.PRIVATE_REGISTRY_HOST }}/${{ env.GITHUB_REPOSITORY }}:builder
           cache-to: type=inline
         
-      - name: Build and push
+      - name: Build and push (final)
         uses: docker/build-push-action@v6
         with:
           context: .
-          push: ${{ github.event_name != 'pull_request' }}
+          push: ${{ github.ref == 'refs/heads/main' }}
           tags: ${{ secrets.PRIVATE_REGISTRY_HOST }}/${{ env.GITHUB_REPOSITORY }}:latest
           cache-from: type=registry,ref=${{ secrets.PRIVATE_REGISTRY_HOST }}/${{ env.GITHUB_REPOSITORY }}:latest
           cache-to: type=inline