Hi,
So this appears to fail with Ubuntu as well. I have two Ubuntu VMs (16.04 and 18.04) on my Mac at home and when I do this on those VMs it works fine. I changed the RUN command in the Dockerfile to do a:
getent hosts dl-cdn.alpinelinux.org
Which, when I do it on the VMs on my Mac it works fine but it fails on the VM at work. So my guess is that DNS is failing. How would I specify an IPv4 DNS name server for docker to use?
Thanks,
Rob