docker apt-get issues and DNS problems

I had trouble running a docker build because

apt-get update

and

apt-get -y install apache2 

won't work due to DNS resolution failures

Found these posts that explained why:
Reference1: http://stackoverflow.com/questions/24832972/docker-apt-get-update-fails
Reference2: http://stackoverflow.com/questions/24151129/docker-network-calls-fail-during-image-build-on-corporate-network

Quoting the solution:

Those Google servers weren't accessible from behind our firewall, which is why we couldn't resolve any URLs.
The fix is to tell Docker which DNS servers to use. This fix depends on how you installed Docker:
Ubuntu Package
If you have the Ubuntu package installed, edit /etc/default/docker and add the following line:
DOCKER_OPTS="--dns <your_dns_server_1> --dns <your_dns_server_2>"
You can add as many DNS servers as you want to this config. Once you've edited this file you'll want to restart your Docker service:
sudo service docker restart
Binaries
If you've installed Docker via the binaries method (i.e. no package), then you set the DNS servers when you start the Docker daemon:
sudo docker -d -D --dns --dns &

And on a windows machine, you can run

ipconfig /all

to find your DNS servers
On a linux host (ubuntu 16.10) you can do

nmcli device show <device>

.