uncelvel

~# uname -a
~# lsb_release -a

~# locale-gen en_US
~# locale-gen en_US.UTF-8
~# apt-get -y --force-yes remove ntpdate
~# apt-get -y --force-yes install ntp
~# /etc/init.d/ntp restart
~# dpkg-reconfigure tzdata

uncelvel

Modifying an Existing Docker Image

To install a custom package or modify an existing docker image we need to

1. run a docker a container from the image we wish to modify
2. modify the docker container
3. commit the changes to the container as a docker image
4. test changes made to image

1.) Running a docker container from an image

uncelvel

#!/bin/sh
# The following arguments are passed to the script:
#
# <master-name> <role> <state> <from-ip> <from-port> <to-ip> <to-port>

MASTER_IP=$6
VIP=172.17.0.101
NETMASK=16
IF=eth0
MY_IP=$(ip addr show dev $IF | grep "global $IF" | head -1 | sed -e "s/^.*inet \(.*\)\/$NETMASK .*$/\1/")