Merge pull request #7 from brianhlin/improve-caching

Improve cache hit rate but ensure we pull the latest software-base

Author: matyasselmeci

.github/workflows/build-container.yml

@@ -36,6 +36,10 @@ jobs:
       with:
         path: /tmp/.buildx-cache
         key: base-${{ matrix.repo }}-buildx-${{ github.sha }}
+        # allow cache hits from previous runs of the current branch,
+        # parent branch, then upstream branches, in that order
+        restore-keys: |
+          base-${{ matrix.repo }}-buildx-
 
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v1
@@ -44,6 +48,7 @@ jobs:
       uses: docker/[email protected]
       with:
         build-args: BASE_YUM_REPO=${{ matrix.repo }}
+        pull: True
         target: base
         cache-to: type=local,mode=max,dest=/tmp/.buildx-cache