Last night, resolve host error happened to my docker build. This is how it happened.
I was in the office. Docker 1.10.1 is used. I was building docker file based
from CentOS 6.6. Half through at
yum install step, I decided I close my
MacBook (hibernate and not shut down). As it always takes a while to
complete this step, and I couldn't wait that day and went home.
At home, when I open my MacBook, the step is still running for a while. I
Ctrl+C to terminal the build. And then I type
to restart the build again. After then, resolve host error happened
yum install step is occured. I did many other steps, like
removing docker images, docker containers. Non of these worked. It said
couldn't resolve host 'mirrorlist.centos.org' or
Cannot retrieve repository metadata (repomd.xml) for repository.
After searching for answers from Internet, the one solution that works for me is restarting my MacBook.