Container shell now defaults to user `crosvmdev` which will have
same UID & GID as outside user. VS Code Remote Containers extension
has the same behavior when loading config from devcontainer.json.
TEST=all tests pass in container, new files in container have same
permission as files created outside.
FIXED=b:239476013
Change-Id: Ib3c696509e9ea45edd5f02ff025d9477576ec765
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3814094
Auto-Submit: Zihan Chen <zihanchen@google.com>
Reviewed-by: Dennis Kempin <denniskempin@google.com>
Tested-by: Zihan Chen <zihanchen@google.com>
Commit-Queue: Dennis Kempin <denniskempin@google.com>
