update container labels

[avnishsinghh]

No description provided.

[jmtcsngr]

Waiting to decide if we want to keep publishing the images.

[nerdstrike]

I think we can use this but I have some questions for us to answer:

1. Is $RELEASE_VERSION a "github release", or the newest tag? We've not been very good about doing formal github releases.
2. There are other images to build also. The original build here was so that Adam could auto-publish the OpenAPI docs on release. The frontend app resides in this repo under /frontend and is a node/vite project. There is also a reverse proxy under /docker/proxy. Is it practical to build all three here? Should we?

In principle, I think we should aim to building the images on github, and then modify the deployment procedure to be more like "build VM, pull the images from github and configure".