Commits on Feb 1, 2021

1. Replace Alpine-based image with a Debian-based image …

   Alpine Linux uses musl libc instead of glibc which means it cannot use most
   pre-built Python wheels for glibc-based Linux distributions [1]. As a result, Python
   packages need to be built from source, leading to longer build times and
   increased complexity in the Dockerfile for more complex packages. For complex
   packages like opencv-python, building from source is especially non-trivial.
   
   This commit ports the existing Alpine-based Dockerfile to a minimal Debian-based
   file with pre-installed Python 3 (the official Python Docker image) and removes
   dependencies that were originally required to build Python packages from
   sources (e.g., cvxopt) where installation from a wheel is now possible.
   
   This commit also removes all explicit references to Python 2 dependencies, as
   fauna is compatible enough with Python 3 for downloading to work and sacra was
   previously removed.
   
   [1] docker-library/docs#904

   

   huddlej authored and tsibley committed Feb 1, 2021
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