Fix docker-compose.yaml

[covracer]

Background and Links

• Docker compose file still referenced .venv, but I think that approach was abandoned due to conflicts with volume mount
• I mostly python -m manage without Docker these days, but I like keeping working Docker images around

Changes and Testing

• Remove .venv from paths
• Auto-update boilerplate from upstream

Questions and Followup

• Node from asdf?
• Sharing host and container venv? uv cache?

[DuncanTormey]

I too have slowed down my "all docker all the time" mentality. I feel like it is nice to support docker and venv.