Set the current UID and GID of the executing user as build arguments for
the build of the container, so that environments with other UIDs and GIDs
than 1000 are supported.
Using `make container` or, if you don't have automake/gmake on your host
system, `./scripts/container.sh` will build an image for the current
branch your are on and drop you into a shell running inside a container
using that image.
From there all tooling required to work on Gluon is available.
Supports both podman (preferred) and docker.