Add CI pipeline

[edilmedeiros]

Can we have a CI that at least builds the docker images for checking before merging PRs?

[m4ycon]

Using github actions would be a good idea and it seems like public repos are totally free. I'll see if I come with something this weekend.

https://github.com/orgs/community/discussions/26054
https://github.com/orgs/community/discussions/70492