Improve Docker cache handling

Author: blootsvoets

.github/workflows/main.yml

@@ -89,7 +89,7 @@ jobs:
           context: .
           file: ./Dockerfile
           cache-from: type=local,src=/tmp/.buildx-cache
-          cache-to: type=local,dest=/tmp/.buildx-cache,mode=max
+          cache-to: type=local,dest=/tmp/.buildx-cache-new,mode=max
           load: true
           tags: ${{ steps.docker_meta.outputs.tags }}
           # Use runtime labels from docker_meta as well as fixed labels
@@ -109,3 +109,8 @@ jobs:
       - name: Push image
         if: ${{ github.event_name != 'pull_request' }}
         run: docker push ${{ env.DOCKER_IMAGE }}:${{ steps.docker_meta.outputs.version }}
+
+      - name: Move cache
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache