Add Docker Image CI workflow

[wilsonwu]

No description provided.

[wilsonwu]

@zachaller I'd like to build this plugin as Docker image, it is easy to use for end users, and I tried to push the image into ghcr repo, and I got below problem:

Error: buildx failed with: ERROR: failed to solve: failed to push ghcr.io/argoproj-labs/rollouts-plugin-trafficrouter-contour:v0.2.1-7-g53d9e631: unexpected status from POST request to https://ghcr.io/v2/argoproj-labs/rollouts-plugin-trafficrouter-contour/blobs/uploads/: 403 Forbidden

I am not sure this is the right place I can push image into, can you help to get a official repo that I can use? Thanks!

[zachaller]

I think we would just need to reach out to argo-contributors on slack to get the initial package created via this https://github.com/orgs/argoproj-labs/packages once that is done I think you can push using GITHUB_TOKEN. Also the docker image is a neat idea. Also just as a note because I did not see directions for it you can also download via https and specify a sha as well.

[wilsonwu]

I think we would just need to reach out to argo-contributors on slack to get the initial package created via this https://github.com/orgs/argoproj-labs/packages once that is done I think you can push using GITHUB_TOKEN. Also the docker image is a neat idea. Also just as a note because I did not see directions for it you can also download via https and specify a sha as well.

Thanks Zach, got it, currently I publish the image into our company registry, I will create an issue for this to improve it more open later.