pre-commit is not available inside devcontainer

[prdktntwcklr]

Summary

The docs suggest that pre-commit should be run on every commit to ensure consistency of the codebase. However, I'm encountering an issue where pre-commit is not available inside the devcontainer.

Steps to reproduce

1. Clone the repository.
2. Open the project in the devcontainer environment using VS Code.
3. Attempt to run pre-commit install.

Expected Behavior

pre-commit should be available.

Actual Behavior

Running pre-commit install gives an error mesasge:

root@c97ed173883e:/workspaces/zmk# pre-commit install
bash: pre-commit: command not found
root@c97ed173883e:/workspaces/zmk# pip3 list | grep pre-commit
root@c97ed173883e:/workspaces/zmk#

Manually attempting to install pre-commit fails:

root@c97ed173883e:/workspaces/zmk# pip3 install pre-commit
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.
    
    If you wish to install a non-Debian-packaged Python package,
    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.
    
    If you wish to install a non-Debian packaged Python application,
    it may be easiest to use pipx install xyz, which will manage a
    virtual environment for you. Make sure you have pipx installed.
    
    See /usr/share/doc/python3.12/README.venv for more information.

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.

Possible Solution

1. Add pre-commit to the requirements.txt file that is referenced as part of the Dockerfile setup.
2. (Optional, But Recommended) As part of starting the devcontainer, run pre-commit install automatically to ensure pre-commit hooks are in place.