Reduce docker image size from 900MB to 70MB by using a multi-stage build.
Switch base image to Debian Buster as Ubuntu Eoan is no longer supported and I was finding gettimeofday returns strange values when using Ubuntu Focal on arm with docker hosts with older linux kernels.
Remove Dockerfile-pi as users should use the new multi-arch image instead.
Update some incorrect documentation on using the docker image.
Reduce docker image size from 900MB to 70MB by using a multi-stage build.
Switch base image to Debian Buster as Ubuntu Eoan is no longer supported and I was finding gettimeofday returns strange values when using Ubuntu Focal on arm with docker hosts with older linux kernels.
Remove Dockerfile-pi as users should use the new multi-arch image instead.
Update some incorrect documentation on using the docker image.