docker with docker-machine on centos 6

docker-centos6.sh

# Author: Maxim Doucet
# Date: 2016-04-01
# docker machine and docker client to run docker in virtualbox with centos 6

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# install it in $HOME

mkdir -p ~/local/docker

# download docker machine
curl -L https://github.com/docker/machine/releases/download/v0.6.0/docker-machine-`uname -s`-`uname -m` > ~/local/docker/docker-machine-0.6.0
# get the sha256sum at https://github.com/docker/machine/releases

# download docker client (see https://github.com/docker/docker/releases)
curl -L https://get.docker.com/builds/Linux/x86_64/docker-1.10.3 > ~/local/docker/docker-1.10.3
curl -L https://get.docker.com/builds/Linux/x86_64/docker-1.10.3.sha256 > ~/local/docker/docker-1.10.3.sha256

# make the files executable
chmod a+x ~/local/docker/docker!(*sha256*)

# create symbolic links in ~/bin

pushd ~/bin
ln -fs ../local/docker/docker-1.10.3 docker
ln -fs ../local/docker/docker-machine-0.6.0 docker-machine

# prepare a place to install bash completion in $HOME
cat << EOF >> ~/.config/bash_completion
for f in ~/.config/bash_completion.d/* ; do                                    
  source "$f"                                                                  
done
EOF

mkdir ~/.config/bash_completion.d

# download docker machine bash completion
# see https://docs.docker.com/machine/completion/
files=(docker-machine docker-machine-wrapper docker-machine-prompt)
for f in "${files[@]}"; do
  curl -L https://raw.githubusercontent.com/docker/machine/v$(docker-machine --version | tr -ds ',' ' ' | awk 'NR==1{print $(3)}')/contrib/completion/bash/$f.bash > ~/.config/bash_completion.d/$f
done

# download docker client bash completion

curl -XGET https://raw.githubusercontent.com/docker/docker/master/contrib/completion/bash/docker > ~/.config/bash_completion.d/docker

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# use docker with docker machine

# setup a docker host in virtuabox
# by following https://docs.docker.com/machine/get-started/

docker-machine create --driver virtualbox --virtualbox-cpu-count 2 --virtualbox-memory 2048 default

# stop it with
docker-machine stop

# start it with
docker-machine start

# initialize docker with
eval "$(docker-machine env default)"

# test by running echo in a lightweight container (https://hub.docker.com/_/alpine/)
docker run alpine echo hello world

# check what's the docker host's IP address
docker-machine ip default

# we can have a nginx server running and test it on port 8000 via
docker run -p 8000:80 nginx

# or a daemonized version
docker run -d -p 8000:80 nginx

# update docker-machine virtualbox
docker-machine upgrade

# list and update a docker image
docker images
docker pull alpine

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# docker-machine aliases

RED='\[\e[0;31m\]'
NC='\[\e[0m\]' # No Color
alias docker-start='docker-machine start default ; PS1_ORIG_DM="${PS1}" ; PS1="${RED}\$(__docker_machine_ps1 docker-%s)${NC} ${PS1}" ; eval "$(docker-machine env default)" ; echo "docker-machine ip: $(docker-machine ip)"'
alias docker-stop='docker-machine stop default ; unset DOCKER_TLS_VERIFY DOCKER_HOST DOCKER_CERT_PATH DOCKER_MACHINE_NAME ; PS1="${PS1_ORIG_DM}"'