I built two containers, one an application and one a database. However, they are not able to communicate with each other. I suspect this is because the DNS server is set to 188.8.131.52 and 184.108.40.206 in
/etc/resolv.conf. I recall setting this somewhere when I was installing docker on Ubuntu as a snap.
Is there a way to resolve this issue such that they are able to communicate?
Source: Docker Questions