This PR restructures the integration tests and prebuilds all common assets used in all tests:
Headscale and Tailscale HEAD image
hi binary that is used to run tests
go cache is warmed up for compilation of the test
This essentially means we spend 6-10 minutes building assets before any tests starts, when that is done, all tests can just sprint through.
It looks like we are saving 3-9 minutes per test, and since we are limited to running max 20 concurrent tests across the repo, that means we had a lot of double work.
There is currently 113 checks, so we have to do five runs of 20, and the saving should be quite noticeable! I think the "worst case" saving would be 20+min and "best case" probably towards an hour.
* replace deprecated golangci-lint output format
CI was producing this kind of messages:
> [config_reader] The output format `github-actions` is deprecated, please use `colored-line-number`
* Actually lint files on CI
This commit configures the CI to run specific parts of the CI when
relevant changes has been made.
This should help us not have to deal with the integration tests when we
do doc/admin changes.
This commit splits the lint and test steps into two different jobs in
github actions.
Consider this a suggestion, the idea is that when we look at PRs we will
see explicitly which one of the two types of checks fails without having
to open Github actions.
