Build of openstack-neutron-init container fails [Docker DNS issue]

[nitishkrishna]

Error seen:

ASK [contrail-build-dockers : Build container openstack-neutron-init] *********************************************************************************************************************************************************************
fatal: [localhost]: FAILED! => {
"changed": true,
"cmd": "./build.sh openstack/neutron-init",
"delta": "0:00:22.789021",
"end": "2018-02-08 10:28:24.543538",
"rc": 1,
"start": "2018-02-08 10:28:01.754517"
}
STDOUT:
INFO: Target platform: centos:7.4.1708
INFO: Contrail version: 10000-1
INFO: OpenStack version: ocata
INFO: OpenStack subversion (minor package version): 3
INFO: Contrail registry: 172.17.0.1:6666
INFO: Contrail repository: http://172.17.0.1:6667/
INFO: Contrail container tag: 10000-1-centos7-ocata
INFO: Docker version: 17.03.1-ce
INFO: starting build from /root/contrail-container-builder/containers with relative path openstack/neutron-init
INFO: prepare Contrail repo file in base image
INFO: base/contrail.repo and it's checksum base/contrail.repo.md5 are exist, check them
INFO: content of base/contrail.repo is not changed
INFO: test/test/contrail.repo and it's checksum test/test/contrail.repo.md5 are exist, check them
INFO: content of test/test/contrail.repo is not changed
INFO: Building contrail-openstack-neutron-init
Sending build context to Docker daemon 5.632 kB
Step 1/4 : FROM 172.17.0.1:6666/contrail-base:10000-1-centos7-ocata
---> d86117dc2b1d
Step 2/4 : RUN yum install -y neutron-plugin-contrail python-neutron-lbaas yum clean all -y && rm -rf /var/cache/yum
---> Running in c22a75c369d7
Loaded plugins: fastestmirror, ovl, priorities
https://mirror.chpc.utah.edu/pub/epel/7/x86_64/repodata/repomd.xml: [Errno -1] repomd.xml does not match metalink for epel
Trying other mirror.
http://mirror.us.leaseweb.net/epel/7/x86_64/repodata/repomd.xml: [Errno -1] repomd.xml does not match metalink for epel
Trying other mirror.
....

http://mirrors.upr.edu/epel/7/x86_64/repodata/repomd.xml: [Errno -1] repomd.xml does not match metalink for epel
http://fedora.westmancom.com/epel/7/x86_64/repodata/repomd.xml: [Errno -1] repomd.xml does not match metalink for epel
https://mirrors.ucr.ac.cr/epel/7/x86_64/repodata/repomd.xml: [Errno -1] repomd.xml does not match metalink for epel
The command '/bin/sh -c yum install -y neutron-plugin-contrail python-neutron-lbaas yum clean all -y && rm -rf /var/cache/yum' returned a non-zero code: 1
ERROR: Failed to build some containers, see log files:

#################################
Manual workaround:

Edited /etc/docker/daemon.json:

{"insecure-registries": ["172.17.0.1:6666"],
"dns": ["10.84.5.100"]
}

systemctl docker restart