linux docker notes

• Links docker-compose , Docker&Oracle-java , Containers

• On Ubuntu
  • install docker
  • add user to docker group, logout and log in again

    •  adduser Me docker 

  • Flags
    • -t pseudo-TTY
    • -i --interactive

    • --name "NameContainer"

    • --publish=[] format ip:hostPort:containerPort | ip::containerPort | hostPort:containerPort | containerPort
    • -e, --env=[] Set environment variables
    • --add-host=[] Add a custom host-to-IP mapping (host:ip)
    • --rm Automatically remove the container when it exits
  • docker search ubuntu:14.04

    •  $ docker search ubuntu:14.04   $ docker search --no-trunc --stars=1 etcd 

  • downloaded images

    •  docker images 

  • run interactively

    •  $ docker run -it ubuntu:14.04 

       $ docker run -it -v ~/docker:/docker ubuntu:14.04 

       $ docker run -it -v ~/docker:/docker -v /dev/log:/dev/log ubuntu:14.04 

  • view running images and historic

    •  $ docker ps -a 

  • connect to a running docker attache to main terminal. (attach or exec new app)

    •  docker exec -it <<docker ps #id>> /bin/bash 

  • Find docker details e.g. ip

    •  docker inspect <container id>  

  • set default resolve.conf dns servers.
    • create/edit $ sudo gvim /etc/docker/daemon.json

      •        {
                "dns": ["8.8.8.8", "8.8.4.4"]
               }

  • commit a new image
    1. run and make changes.
    2. exit
    3. commit and save as new image

       •        $ docker commit -m "My Image Test01" -a "My Name" 37bf99224fce myimg01
                sha256:4b439bc2347b744a405ae6a60862906442e461eddd33d0496dff322060fe837b

    4. run new image. $ docker run -it -v ~/docker:/docker myimg01
• re-run exited image.
  • docker start xxxxxx
  • docker exec xxxxxx /bin/bash