message: ci: disable build cache for top images test
  Prepare for refactoring build cache for nydusify, and make
  the test pass first:
diff: @@ -49,8 +49,6 @@ jobs:
  sudo DOCKER_CONFIG=$HOME/.docker nydusify convert \
  --source $I:latest \
  --target ${{ env.REGISTRY }}/${{ env.ORGANIZATION }}/$I:nydus-nightly-v5 \
  - --build-cache ${{ env.REGISTRY }}/${{ env.ORGANIZATION }}/nydus-build-cache:$I-v5 \
  - --build-cache-version v1 \
  --fs-version 5
  # use local registry for speed
  sudo DOCKER_CONFIG=$HOME/.docker nydusify convert \
  @@ -70,8 +68,6 @@ jobs:
  sudo DOCKER_CONFIG=$HOME/.docker nydusify convert \
  --source $I:latest \
  --target ${{ env.REGISTRY }}/${{ env.ORGANIZATION }}/$I:nydus-nightly-v6 \
  - --build-cache ${{ env.REGISTRY }}/${{ env.ORGANIZATION }}/nydus-build-cache:$I-v6 \
  - --build-cache-version v1 \
  --fs-version 6
  # use local registry for speed
  sudo DOCKER_CONFIG=$HOME/.docker nydusify convert \
  