Docker image publishing setup (GitHub Registry / Docker Hub)

[talko-evinced]

Hi,

I’d like to request support for setting up a Docker image publishing flow.
The idea is to manage the Docker image in either GitHub Container Registry or Docker Hub (depending on what the project currently uses or prefers).

I assume it’s GitHub Container Registry, but just to be sure, maybe it’s Docker Hub.

My plan:

• I will prepare a Pull Request that includes a GitHub Action for building and publishing the Docker image.
• I need to know if this repository/project already has Docker Hub or GitHub Container Registry configured, or if I should
  create one.

Question:

• Which registry should we target for publishing (Docker Hub or GitHub Container Registry)?
• Are there any existing credentials/secrets I should rely on, or should we create new ones for this purpose?

Thanks in advance for the guidance!