DOCKER

This project give you the possibility to create base image for your application. You can build and push on the paloIT 's docker registry. The idea is to create template from each system and shared with the paloIT community. You can version each image.

FUNCTIONALITY

• docker images
• docker rmi {id or image name}
• docker rm {id or container name}
• docker ps -a (show all container)
• docker ps (show alive container)
• docker network ls (show all network)
• docker network rm {network name} (remove a network)
• docker stats $(docker ps --format={{.Names}}) (show stats by container name)
• docker inspect --format="{{.State.Running}}" YOUR_CONTAINER_NAME (test if container running)
• docker volume ls -f dangling=true -f driver=local -q | xargs -r docker volume rm (rm all useless volume, be carefull with flocker driver)
• docker rmi $(docker images | grep "^" | awk "{print $3}") (rm all untagged images)
• docker rmi $(docker images -a --filter=dangling=true -q) (clean all dangling images)

COMMAND IN SHELL TO TEST CONTAINER

RUNNING_CONTAINER=$(docker inspect --format="{{.State.Running}}" YOUR_CONTAINER_NAME 2> /dev/null) if [ "$RUNNING_CONTAINER" == "true" ]; then ..... fi

COMMAND CLEAN RAM

• use memory in real time

  • watch -n 1 free -m
  • watch -n 1 cat /proc/meminfo

• clean memory not used

  • sudo sysctl -w vm.drop_caches=3
  • sudo sync && echo 3 | sudo tee /proc/sys/vm/drop_caches

DOCKER BASH COMPLETION

See pages:

https://docs.docker.com/machine/completion/

https://docs.docker.com/compose/completion/

• on linux:

  curl -L https://raw.githubusercontent.com/docker/docker-ce/master/components/cli/contrib/completion/bash/docker > /etc/bash_completion.d/docker
  curl -L https://raw.githubusercontent.com/docker/compose/master/contrib/completion/bash/docker-compose > /etc/bash_completion.d/docker-compose
  

• on mac:

  BREW

  brew install bash-completion

  edit ~/.bash_profile or ~/.profile:

  if [ -f $(brew --prefix)/etc/bash_completion ]; then
  . $(brew --prefix)/etc/bash_completion
  fi
  

  MACPORTS

  sudo port install bash-completion

  edit ~/.bash_profile or ~/.profile:

  if [ -f /opt/local/etc/profile.d/bash_completion.sh ]; then
      . /opt/local/etc/profile.d/bash_completion.sh
  fi
  

  ADD COMPLETION FILE

  curl -L https://raw.githubusercontent.com/docker/docker-ce/master/components/cli/contrib/completion/bash/docker > `brew --prefix`/etc/bash_completion.d/docker   
  curl -L https://raw.githubusercontent.com/docker/compose/master/contrib/completion/bash/docker-compose >`brew --prefix`/etc/bash_completion.d/docker-compose
  

  Open a new terminal or make source ~/.bash_profile or ~/.profile

SED COMMAND ON MAC

Use GNU SED from brew

• install brew: /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
• install gsed: brew install gnu-sed --with-default-names
• uninstall gsed: brew uninstall gnu-sed