Publish websocket container

[Yann-J]

PR #21954 was hoping to publish a superset-websocket container to Docker Hub, but this has apparenlty not worked... Since this is really CI-related I'm not sure external contributors like myself can really fix that, so raising this as an issue instead.

See also related PR #21379, also attempting to enable image publication...

In the meantime, our organization maintains an up-to-date fork over here (kept in sync using pull app), which has auto-builds into this image.

[Yann-J]

Hey @craig-rueda any idea why the websocket image isn't being published?

[Yann-J]

Oops, after looking at the logs I guess I see the problem! The image is built but not pushed... Fix on its way with #22181

[rusackas]

Fix is merged, closing issue.