cache_to inline and cache_from

[GaryPWhite]

Fixes #83.

Changes

Sets up cache_to and cache_from for docker-compose builds. Note that the cache_to is set to inline. My best estimation for how we push the cache with a given image up to ghcr is included in the link provided -- there's not much documentation on it from docker directly.

Also worth noting -- builds (once cached) are lightning fast!

For significant contributions please make sure you have completed the following items:

• Appropriate CHANGELOG.md updated for non-trivial changes
• Design discussion issue Add cache_from command to docker compose #83

[cartersocha]

@austinlparker this might help with some of the build times

[austinlparker]

Yeah, would certainly help on rebuilds if not initial pull I reckon?

[cartersocha]

Rebuilds for sure.

I'm not an expert but I think it can help on initial builds too if we connect it to a cache source for images in gchr like Gary refers to.

Ideally only the delta in the repo needs to be rebuilt

[GaryPWhite]

I found through some tinkering that we should probably update the .env file when we do releases to ghcr -- otherwise it will not pick up the right version.

Otherwise we could put together a makefile that pulls the most recent version of image and then tries to build -- would automatically use the cache_from that way.

although then people would need make :)

[austinlparker]

although then people would need make :)

I mean... you kinda do need make rn, even on Windows, if you want to get the toolchain. That said, would it break entirely if someone skipped make and just did docker-compose up?

[mic-max]

After merging this a release would be done so to upload the cached version of the images to the docker repository. I think just to be safe here we could try with a single service - I elect the particularly slow shippingservice (Rust) which will be easy to see the speedup and know the caching worked.

[GaryPWhite]

commented out, so we don't have to re-find the implementation later.

[austinlparker]

@mic-max are there any changes on this that are pending? shows you still have stuff requested but I don't see it. would like to get this PR updated and merged in.

[cartersocha]

@GaryPWhite please update the branch so we can merge!

[austinlparker]

anyone know why maintainers cant refresh this branch? weird. waiting on OP to refresh then g2g

[cartersocha]

I think it's because some of the upstream repos have branch protections and some sort of access restrictions

[cartersocha]

@GaryPWhite just tried this on my mac and it was broken. I'm getting this error: "cache export feature is currently not supported for docker driver. Please switch to a different driver"

Any tips? I made sure docker is updated and couldn't find anything specific on Google