[REQ] Feature Request Description

[halostatue]

Is your feature request related to a problem? Please describe.

We would prefer to use a registry separate DockerHub for pulling the OpenAPI generator image.

Describe the solution you'd like

Please publish the Docker image to more registries than hub.docker.com. The GitHub container registry should be easy (I have done it for other images, such as: https://github.com/KineticCafe/docker-sqitch-pgtap/blob/main/.github/workflows/publish-release.yml). The public AWS ECR registry should not be difficult, but would be more work than adding GHCR.

Describe alternatives you've considered

Keep using the DockerHub image or mirroring it myself on a different registry. Having it come from an official OpenAPITools-supported registry would be preferred.