Set up service build service to produce Docker image

[thequicksort]

Description

As part of the continuous integration/ build process, we need to set up a build server that will monitor changes pushed to the respository, reject unsavory ones (e.g. break tests), and generate a build image that we can distribute to users. I recommend using Travis CI and Github Actions, with the final workflow action producing a poretitioner Docker image.

The workflow will look something like:

• Run Linter/Format Enforcer/Tests, reject build if any step fails

• Run nix-build to generate package

• Run a nix/Docker script that creates a base image

Goal

We'll know this works when we can push code to the repository, and the build service spits out a Docker image that can be run on a separate machine.

Resources

• Container images with nix
• Cheap docker images with nix

[thequicksort]

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