Can not resolve hostname in Docker 1.10
It seems Docker 1.10 Embedded DNS have trouble with selinux and firewalld on Fedora, RHEL and CentOS 7. You can work around by disabling selinux and firewalld.Hope Docker team can fix this issue soon!
Update:Docker 1.10.1 has fixed this problem! It works perfectly on Fedora 23, CentOS 7 and RHEL 7