Describe the bug

Experimenting happy path on devfile registry, I tried to change the devfile registry policy to IfNotPresent instead of default Always but it was always resulting in error:

12:53:34] ✅  Post installation checklist [failed]
[12:53:34] → Failed to download image, reason: ImagePullBackOff, message: Back-off pulling image "che-devfile-registry-image:latest".
 ›   Err

Task

Convert CI to GitHub Actions

Context

Travis is removing its free tier for OSS projects, so this should be built with GitHub Actions instead, which is not going to add additional cost.

I would expect this to be one of the easier projects to convert given that Docker isn't used in the build.

See also:

https://github.com/mvdan/github-actions-golang
https://github.com/ac

Some prior art here:

https://github.com/puppeteer/examples/blob/master/verify_sw_caching.js
https://michaljanaszek.com/blog/test-website-performance-with-puppeteer/#cacheAndServiceWorker

I hope the official can add a new command to automatically generate RESTful API