build requires gcc for channels (cryptography)
yourlabs/python image fails to build on
pip install ryzom as
gcc is not available.
ryzom currently includes
cryptography (since June 2019), which requires
setuptools, which requires
gcc in order to build on
manylinux to distribute wheels for CentOS-like libc-based distros, but these don't work for musl-based distros (Alpine).