Python devcontainer won't initialize venv

[raginjason]

I am trying to get a Python devcontainer running with venv. I have a repo located at https://github.com/raginjason/vscode-devcontainer-python-venv, and while it mostly works, any terminals don't seem to honor the venv. My understanding is that any .venv directory under the project should be picked up automatically, but that does not seem to be the case. While I don't think I should need to mess with postCreateCommand and postAttachCommand, I have done so here in an attempt to get things working. This does not seem to help though.

Any thoughts?