Docker build “Could not resolve 'archive.ubuntu.com'” apt-get fails to install anything

Question

I\'ve been trying to run Docker build on various files which previously worked before, which are now no longer working.

As soon as the Docker file included any line

Answer 1

I have struggled for some time with this now as well, but here it is what solved it for me on Ubuntu 16.04 x64. I hope it saves someone's time, too.

1. In /etc/NetworkManager/NetworkManager.conf: comment out #dns=dnsmasq

2. Create (or modify) /etc/docker/daemon.json:

{
    "dns": ["8.8.8.8"]
}

3. Restart docker with: sudo service docker restart