It would be nice to be able to run `cargo-checkct` in CI on GitHub Actions. I am [trying to put together a workflow for it](https://github.com/RustCrypto/crypto-bigint/pull/796), but it would be nice if there were something reusable maintained upstream. I'm wondering given everything that needs to be installed if it might make sense to use a [Docker container action](https://docs.github.com/en/actions/sharing-automations/creating-actions/creating-a-docker-container-action)