Musl linux wheels are missing

```
/code # pip --version
pip 23.0 from /usr/local/lib/python3.9/site-packages/pip (python 3.9)
/code # python --version
Python 3.9.16
/code # pip install rdkit
ERROR: Could not find a version that satisfies the requirement rdkit (from versions: none)
ERROR: No matching distribution found for rdkit
```

The docker image used is `python:3.9-alpine`. Not using conda.