Fix Docker image for ARM architecture

[sansaid]

When building the Docker image for the ARM architecture, it fails to run with the following error:

Error loading shared library libpython3.9.so.1.0: Operation not permitted (needed by /usr/local/bin/python)
Error relocating /usr/local/bin/python: Py_BytesMain: symbol not found

This is on a Raspberry Pi. Need to find out why. It's possible that I need to use a separate base image to the python:3.9-alpine for the AMD builds.

[sansaid]

This might be a good resource to use: https://withblue.ink/2019/07/13/yes-you-can-run-docker-on-raspbian.html

[sansaid]

Hmm.. Nah, the python:3.9-alpine image targets multiple architectures: https://hub.docker.com/layers/python/library/python/3.9-alpine/images/sha256-646ec1e84c404aa80307b77b8c85f5d955ed3914bfec4552c4bd95909ed1e9fe?context=explore

[sansaid]

Possible solution? docker-library/python#489

[sansaid]

Another possible solution: docker/compose#6292

[sansaid]

Could have something to do with the Docker installation: https://stackoverflow.com/questions/62011705/error-when-docker-compose-usr-local-bin-python-error-while-loading-shared-lib

[sansaid]

Test running the python:3.9-alpine image by itself