Caching inside GitHub's built-in container support for jobs

[dime10]

Is there a way to make this action work with GitHub's built-in container support for jobs?

For example the step below results in a cache miss, whereas it would produce a cache hit if run without the container: parameter:

jobs:
  test:
    name: Test Job
    runs-on: ubuntu-22.04
    container: quay.io/pypa/manylinux2014_x86_64
    steps:
    - name: Cache Files
      id: cache-files
      uses: actions/cache@v3
      with:
        path: files
        key: some-key

[ungarida]

Sadly this topic was brought already time ago in this discussion https://github.com/actions/cache/discussions/709 ... any chance to have a feedback?

[ph-fritsche]

Restoring in another container works: https://github.com/ph-fritsche/repro-action-cache/actions/runs/3882822825/jobs/6623416169#step:4:95 Restoring on the host fails: https://github.com/ph-fritsche/repro-action-cache/actions/runs/3882822825/jobs/6623415998#step:3:90

There is a mismatch for cacheVersion which is determined in cacheHttpClient.getCacheVersion() and depends on which version of zstd is available. The ubuntu-latest host has zstd v1.5.2 while the e.g. the node:lts-slim container does not include zstd.

[theisgroenbech]

@ph-fritsche Thank you so much for your comment. I solved my issue by installing zstd in my container as the first step 🥳

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