tree 660d6087dbb4da3c918a53ef43da7a94ddeb6ce5
parent f131c113184b3a769feb63395772bdfb5e7bc40d
author Stephanos Ioannidis <root@stephanos.io> 1649909288 +0900
committer Anas Nashif <anas.nashif@intel.com> 1650374106 -0400

ci: Switch to GitHub Container Registry

This commit updates the CI workflows to pull the CI image from the
GitHub Container Registry (GHCR) instead of the DockerHub, as part of
the effort to move away from using the DockerHub.

The rationale is as follows:

1. DockerHub imposes an impractical pull rate limit (200 pulls per
   6-hour period) that can easily be exceeded in a high volume CI like
   that of the Zephyr Project.

2. GitHub Container Registry is provided by the GitHub and offers
   better integration with the GitHub Actions (e.g. access permissions
   and tokens).

3. DockerHub offers very limited features for free accounts compared to
   the GitHub Container Registry.

Note that the CI image is still available on both GitHub Container
Registry and DockerHub, and third-party users are free to choose
whichever they prefer.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>