apt docker command caching

[jayvdb]

I have no idea if this is possible, but it seems like it should be....

The apt-get install ... may have taken quite a while creating a lovely layer on top of the ghaction-cmake image with all the. build deps. It would be great if that layer could be cached so that it can be re-used for the next workflow invocation.

I see articles like https://evilmartians.com/chronicles/build-images-on-github-actions-with-docker-layer-caching talking about similar use of https://github.com/actions/cache

[jayvdb]

https://github.com/uraimo/run-on-arch-action has support for caching.