docker-compose based dev environment

[amorey]

The kubetail-ui project has a nice docker-compose based dev environment that makes it easy to handle dev dependencies (https://github.com/kubetail-org/kubetail-ui) and it would be nice to have something similar for the main kubetail repo.

From a user perspective, running docker compose up should run these commands inside a docker container:

# run the Dashboard server
cd modules/dashboard
go run cmd/main.go -c hack/config.yaml

# run the Dashboard UI
cd dashboard-ui
pnpm install
pnpm dev

The tricky thing in this setup is that the docker dashboard needs access to the host's kube config file and must also be able to make network calls to the kubernetes dev cluster running on the host. In addition, for a nice developer experience the backend/frontend should also restart in response to code changes. The frontend does this automatically for source code changes but doesn't handle new dependencies. The backend doesn't have support for automatic restarts at all.