b3df81c143
1. Not only publish Docker images when new release tags are created but on every push to master, since release frequency is so low. 2. Use newer versions of the various actions (setup-buildx-action, login-action, metadata-action, ...) to suppress some deprecation warnings see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/