Docker

## Docker.io
yum install docker-io
/etc/init.d/docker restart

### Action
docker version
docker -h
docker search tutorial
docker pull learn/tutorial
docker run learn/tutorial apt-get install -y ping
docker run learn/tutorial echo 123
docker commit 6388 learn/ping
docker run learn/ping ping www.baidu.com
docker inspect c4c
docker ps -a
docker images

### Image tar save load
docker save -o ldap_image.tar ldap
docker load --input ldap_image.tar

### Docker ubuntu ssh server

apt-get update && apt-get install -y openssh-server
mkdir /var/run/sshd
echo 'root:screencast' | chpasswd
sed -i 's/PermitRootLogin without-password/PermitRootLogin yes/' /etc/ssh/sshd_config
# SSH login fix. Otherwise user is kicked off after login
sed 's@session\s*required\s*pam_loginuid.so@session optional pam_loginuid.so@g' -i /etc/pam.d/sshd