CI - Build and push amd/arm OCI images

[ptx96]

Closes #16

Before merging this:

• test the amd64 image
• create quay.io / docker.io kamaji repositories
• create BOT_QUAY_IO, BOT_DOCKER_IO, USER_DOCKER_IO secrets

I will test the armX images later

EDIT: arm64 image tested inside Oracle Cloud Ampere region, it works!

[prometherion]

@ptx96 secrets on GitHub cannot contain dots, going for underscores if you don't mind.

[ptx96]

@ptx96 secrets on GitHub cannot contain dots, going for underscores if you don't mind.

My bad @prometherion , it was a typo!
Use underscores for sure

[prometherion]

As discussed, we're going to use the following secrets:

QUAY_IO_USERNAME
QUAY_IO_TOKEN
DOCKER_IO_USERNAME
DOCKER_IO_TOKEN

Please, use the new naming convention.

[prometherion]

LGTM, do you think we should give it a try to test the whole workflow?

[ptx96]

LGTM, do you think we should give it a try to test the whole workflow?

Already did that in my fork actions: https://github.com/ptx96/kamaji/runs/6590146018?check_suite_focus=true

Results:

https://quay.io/repository/ptx96/kamaji?tab=tags
https://hub.docker.com/repository/docker/ptx96/kamaji/tags?page=1&ordering=last_updated

I already tested the arm64 image with success

LMK if you need other tests