Docker training

gistfile1.sh

http://192.168.100.7:81

MAC OS X

boot2docker init
boot2docker up
boot2docker ssh

Edit Hosts files

sudo vi /etc/hosts

192.168.100.7 r

Docker Operation Command

docker search ubuntu
# https://registry.hub.docker.com/
docker pull r:80/centos
docker images
docker pull r:80/ubuntu:14.04
docker pull r:80/ubuntu:latest
docker run r:80/ubuntu echo “Hello World”
docker run r:80/ubuntu ls -l
docker run -i -t r:80/ubuntu /bin/bash
  whoami
  hostname
  cat /etc/*release*
  exit
docker ps
docker ps -a
docker rm elegant_pike
docker rm fabc1e7f8816
docker rm 455 822

Build first Docker Image

docker run -i -t ubuntu /bin/bash
  vim
  echo 'Acquire::http::Proxy "http://192.168.100.7:3142";' > /etc/apt/apt.conf.d/11proxy
  apt-get update && apt-get install -y vim
  touch vim-installed
  exit
docker ps -a
docker commit [cid] ubuntu-vim
docker images
docker run -i -t ubuntu-vim /bin/bash
ls -l vim-installed

Docker Registry Operation

Register your account at https://hub.docker.com
You can pull without logging-in
docker login
docker push ubuntu-vim
docker tag ubuntu-vim username/ubuntu-vim
docker images
docker push username/ubuntu-vim
docker pull xxx/ubuntu-vim

Expose Port

ifconfig eth1
docker run -i -t -p 80:80 r:80/ubuntu /bin/bash
  echo 'Acquire::http::Proxy "http://192.168.100.7:3142";' > /etc/apt/apt.conf.d/11proxy
  apt-get update && apt-get install apache2
  service apache2 start
  Go to browser: http://ipaddress
  exit
*Commit your apache2 container as ubuntu-apache2 with tag 14.04 and latest
*Clear your stopped containers

Try Daemon Mode

docker run ubuntu-apache2
docker run -d ubuntu-apache2 service apache2 start
docker run -d ubuntu-apache2 apachectl -DFOREGROUND
docker run -d -p 80:80 ubuntu-apache2 apachectl -DFOREGROUND
docker run -d -p 8880:80 ubuntu-apache2 apachectl -DFOREGROUND
docker run -d -p 80 ubuntu-apache2 apachectl -DFOREGROUND

Using Docker Image to build private Docker registry

docker run -d -p 5000:5000 r:80/registry
docker run -d -p 8080:8080 r:80/docker-registry-ui

Practice

Create ready-to-run Docker image that can SSH to with these commands
  apt-get update && apt-get install -y openssh-server
  sed -i 's/required     pam_loginuid.so/optional     pam_loginuid.so/g' /etc/pam.d/sshd
  sed -i 's/PermitRootLogin without-password/PermitRootLogin yes/g' /etc/ssh/sshd_config
  mkdir /var/run/sshd
  passwd #to set ssh password for root
Run openssh-server foreground with command
  /usr/sbin/sshd -D
Name Docker image as your-private-registry-ip:5000/ubuntu-ssh with tag 20140830 and latest and push it
Try to run container with ssh port 2222 and ssh to container
 ssh -p 2222 root@localhost

Dockerfile

FROM r:80ubuntu
RUN apt-get update
RUN apt-get install -y openssh-server
RUN sed -i 's/required     pam_loginuid.so/optional     pam_loginuid.so/g' /etc/pam.d/sshd
RUN sed -i 's/PermitRootLogin without-password/PermitRootLogin yes/g' /etc/ssh/sshd_config
RUN mkdir /var/run/sshd
RUN echo "root:test1234" | chpasswd
CMD /usr/sbin/sshd -D
EXPOSE 22


#############################################
FROM ubuntu
RUN apt-get update && apt-get install -y nginx
RUN echo “daemon off;” >> /etc/nginx/nginx.conf
ADD default /etc/nginx/sites-available/default
CMD /usr/sbin/nginx -c /etc/nginx/nginx.conf
EXPOSE 80
#############################################
vi default
#############################################
server {
    listen 80;
    location / {
        proxy_pass http://ipaddress:8080;
        proxy_read_timeout 900;
    }
}