Dockerfile.dev runs as root and changes ownership of host .git/objects

[dbarker]

Describe your environment
main at 7ade45b

Steps to reproduce

1. open the devcontainer
2. change and save a file
3. try to stash the file from the host

What is the expected behavior?
no permissions issues

What is the actual behavior?

error: insufficient permission for adding an object to repository database .git/objects
Cannot save the current worktree state

Additional context
Dockerfile.dev runs as root