Don't write to cache for pr builds

.github/workflows/container.yml

@@ -27,23 +27,33 @@ jobs:
 
       - name: Setup Buildx
         uses: docker/setup-buildx-action@v2
-        with:
-          buildkitd-flags: --debug
 
       - name: Login to GitHub Container Registry
+        if: ${{ github.event_name != 'pull_request' }}
         uses: docker/login-action@v2
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Build Images
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          platforms: linux/amd64, linux/386, linux/arm64, linux/arm/v6, linux/arm/v7
+          cache-from: type=registry,ref=ghcr.io/${{ github.repository }}:buildcache
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          
       - name: Build and Push Images
+        if: ${{ github.event_name != 'pull_request' }}
         uses: docker/build-push-action@v3
         with:
           context: .
           platforms: linux/amd64, linux/386, linux/arm64, linux/arm/v6, linux/arm/v7
           cache-from: type=registry,ref=ghcr.io/${{ github.repository }}:buildcache
           cache-to: type=registry,ref=ghcr.io/${{ github.repository }}:buildcache,mode=max
-          push: ${{ github.event_name != 'pull_request' }}
+          push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}