Docker container for arm64

[juli-p]

Error on arm64 platforms:

FATAL:   Unable to handle docker://bigdatainbiomedicine/needl:latest uri: while building SIF from layers: conveyor failed to get: while fetching image: initializing source oci:~/.apptainer/cache/blob:d27923e2d6b009787c82c3c8246136db728f33dc61e73b0dabeecdc80184d7ed: choosing an image from manifest list docker://bigdatainbiomedicine/needl:latest: no image found in image index for architecture arm64, variant "v8", OS linux

[nictru]

See this documentation for multi-platform GitHub Action image builds

It's important to know that Linux on ARM is a separate platform than the Apple ARM

[nictru]

One can also run ARM docker containers on x86 as described here using the platform parameter

As ARM-based GitHub Runners are not publicly available yet and we don't have according machines in our cluster, that's probably the way to go.

I think it should work

[juli-p]

Building and Testing of ARM container works.

The only pre-compiled binary we use is plink (for epiJSON) which is definitely compiled for amd64. However, it runs perfectly inside the arm container which is odd. I expected that we would need a arm version of plink.

Maybe we should test this on a real arm machine instead of the qemu-virtualized test case.
I am pretty sure that on a native arm machine this would not work.