export NEXUS_DOCKER_REPO=$(cat /opt/config/nexus_docker_repo.txt)
DOCKER_IMAGE_VERSION=$(cat /opt/config/docker_version.txt)
export MTU=$(/sbin/ifconfig | grep MTU | sed 's/.*MTU://' | sed 's/ .*//' | sort -n | head -1)
+export DNS_IP_ADDR=$(cat /opt/config/dns_ip_addr.txt)
cd /opt/sdnc
git pull