Add build workflow for seedsigner.

[overcat]

This PR enables users to directly build images through GitHub Actions.

It will take about 2 hours without cache, and about 40 minutes with cache.

[overcat]

I don't want every push to trigger a build, so I choose to let users manually trigger it. See: https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#on

[newtonick]

Very interesting concept, I will review closer later. I’ve got no experience with GitHub build actions.

[overcat]

Hi @newtonick, you can download the compiled image and view the compilation process here. https://github.com/overcat/seedsigner/actions/runs/5273505981

[kdmukai]

@newtonick seems like this PR should be blocked by the reproducible build efforts. Once that path is clear, then we can make sure that the exact same steps are included here.

It would be nice to have an automate-able way for people to trigger their own build process and confirm the result. Obv this would be the least-trustworthy verification method (due to all the potentially mysterious automation), but still a good option.

[kdmukai]

@overcat do Github Actions charge a fee for the VM time?

[overcat]

@overcat do Github Actions charge a fee for the VM time?

It is free, see https://docs.github.com/en/actions/learn-github-actions/usage-limits-billing-and-administration#about-billing-for-github-actions

GitHub Actions usage is free for standard GitHub-hosted runners in public repositories, and for self-hosted runners.

[newtonick]

Tested and worked well. I'm hoping there is opportunity to iterate and make this action even better. Thanks for the contribution and kick starting this idea automating the build process for easier testing and sha256 hashes.

[overcat]

Tested and worked well. I'm hoping there is opportunity to iterate and make this action even better. Thanks for the contribution and kick starting this idea automating the build process for easier testing and sha256 hashes.

I have been busy with other projects recently. If I have free time afterwards, I will follow up on it again.