Clear cacue by moving its content

This is a workaround for a known problem docker/build-push-action#252

.github/actions/docker-build-push/action.yml

@@ -73,3 +73,14 @@ runs:
         push: ${{ env.PUSH == 'true' }}
         cache-from: type=local,src=/tmp/.buildx-cache
         cache-to: type=local,dest=/tmp/.buildx-cache-new
+
+    - # Temp fix - move cache instead of copying (added below step and
+      # modified value of `cache-to`).
+      # https://github.com/docker/build-push-action/issues/252
+      # https://github.com/moby/buildkit/issues/1896
+      # Without the change some jobs were failing with `no space left on device`
+      name: Move cache
+      shell: bash
+      run: |
+        rm -rf /tmp/.buildx-relay-cache
+        mv /tmp/.buildx-relay-cache-new /tmp/.buildx-relay-cache