Add meta information to Dockerfile using LABEL

**Is your feature request related to a problem? Please describe.**
Having recently switched to `ghcr` I noticed that the interfaces prompts publishers to [provide additional information](https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-container-registry#labelling-container-images) about the container using [LABEL](https://docs.docker.com/engine/reference/builder/#label)

**Describe the solution you'd like**
Add relevant `LABEL` for the template which the adopting projects will build upon.

Our documentation should capture the best practices and what's expected of the developers adopting this template.