lxc deploy alpine linux ansible ready

deploy-lxc-alpine.sh

#!/bin/bash

# file   : deploy-lxc-alpine.sh
# purpose: deploy a new alpine container that is ready for ansible management
#
# author : harald van der laan
# date   : 2016/04/19
# version: v1.0

lxcName=${1}

if [ -z ${lxcName} ]; then
  echo "[-]: usage: ${0} <container name>"
  exit 1
fi

if [ -z $(which lxc) ]; then
  echo "[-]: lxc is not installed please install lxc"
  echo "[ ]: sudo apt-add-repository ppa:ubuntu-lxc/lxd-stable"
  echo "[ ]: sudo apt-get update"
  echo "[ ]: sudo apt-get install lxd"
  exit 1
fi

lxcAlpineImage=$(lxc image list | egrep "^\|\ alpine\ " &> /dev/null; echo ${?})
lxcContainerExists=$(lxc list | egrep "^\|\ ${lxcName}\ " &> /dev/null; echo ${?})

if [ ${lxcAlpineImage} -ne 0 ]; then
  echo "[ ]: downloading alpine linux 3.3"
  lxc image copy images:alpine/3.3/amd64 local: --alias=alpine &> /dev/null
fi

if [ ${lxcContainerExists} -eq 0 ]; then
  echo "[-]: there is already a container with the name: ${lxcName}"
  exit 1
fi

echo "[ ]: starting alpine linux 3.3 container"
lxc launch alpine ${lxcName} &> /dev/null
sleep 2

echo "[ ]: upgrade alpine linux 3.3 container"
lxc exec ${lxcName} -- apk --update-cache upgrade &> /dev/null

echo "[ ]: installing requirements for ansible management"
lxc exec ${lxcName} -- apk add openssh python &> /dev/null

echo "[ ]: injecting public key of ansible server"
lxc exec ${lxcName} -- mkdir -p /root/.ssh

if [ -f "ansible.pub" ]; then
  lxc file push ansible.pub ${lxcName}/root/.ssh/authorized_keys --uid=0 --gid=0 --mode=0644
else
  echo "[-]: could not find the ansible public key"
  echo "[ ]: please set a password on the root user"
  echo "[ ]: lxc exec ${lxcName} -- passwd root"
fi

echo "[ ]: enable and starting ssh server"
lxc exec ${lxcName} -- rc-update add sshd &> /dev/null
lxc exec ${lxcName} -- /etc/init.d/sshd start &> /dev/null

echo "[+]: container ${lxcName} is ready for ansible management"
exit 0