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

In my case, since my containers were in a cloud environment the MTU of the interfaces were not usual 1500 and was like 1450, so I had to configure my docker daemon to set the MTU to 1450 for containers.

{  
"mtu": 1454 
}

look at this : https://mlohr.com/docker-mtu/