Use registry cache

.github/workflows/default.yaml

@@ -106,16 +106,19 @@ jobs:
           tags: ${{ env.BUILD_IMAGE_TAG }}-${{ env.GIT_SHA7 }}-${{ env.ARCH }}
           push: ${{ github.event_name != 'pull_request' }} # Don't push for PRs
           # Disable automatic image attestations
-          # With image attestations enabled, docker buildx with push the image to the registry as a manifest list.
+          # With image attestations enabled, the image tag pushed to the registry is a manifest list.
           # That makes it impossible to stitch different platform images together in a manifest list, since you 
           # cannot have a manifest list of manifest lists.
           # See https://docs.docker.com/build/attestations/attestation-storage/
           # TODO: Refactor to allow for image attestations
           provenance: false
           sbom: false
           # BUILD_IMAGE_TAG - persistent multi-arch tag, updated at the end of the build (success or failure)
-          cache-from: type=registry,ref=${{ env.BUILD_IMAGE_TAG }}
-          cache-to: type=inline # Write the cache metadata into the image configuration
+          #cache-from: type=registry,ref=${{ env.BUILD_IMAGE_TAG }}
+          #cache-to: type=inline # Write the cache metadata into the image configuration
+          # Use registry cache with max mode to store all image layers in the registry cache
+          cache-from: type=registry,ref=${{ env.BUILD_IMAGE_TAG }}-${{ env.ARCH }}-buildcache
+          cache-to: type=registry,ref=${{ env.BUILD_IMAGE_TAG }}-${{ env.ARCH }}-buildcache,mode=max
 
   test:
     name: "Test: ${{ matrix.version }}/${{ matrix.arch }}"