💚 Fix docker build push

[aaronleopold]

lol so I forgot to add --push when publishing the builds 🙃

[aaronleopold]

So I have a suspicion that podman buildx, when used in this way for building multi-arch images, will overwrite the tag for whichever build happens last (since it is not parallel builds). If this is true, then the next nightly push will only have an arm64 build on dockerhub. This is obviously a problem. I'll divert my attention to the build system again this weekend 😭

[aaronleopold]

https://github.com/redhat-actions/buildah-build?tab=readme-ov-file <-- viable

[aaronleopold]

So I have a suspicion that podman buildx, when used in this way for building multi-arch images, will overwrite the tag for whichever build happens last (since it is not parallel builds). If this is true, then the next nightly push will only have an arm64 build on dockerhub

Yup, it did just that: https://hub.docker.com/layers/aaronleopold/stump/nightly/images/sha256-2633f62ee8a4ed8fa3016cbfd441229e7eddc0fc2a1667181fd2b67297c1537e?context=explore