docker.md

Cheat sheet

https://github.com/wsargent/docker-cheat-sheet

Build an imange from Dockerfile and run

$ cd app
$ docker build -t mttrs/app .
$ docker run --rm -it -p 8080:8080 mttrs/app

Logs

$ docker logs [OPTIONS] CONTAINER

# Tailing logs
$ docker logs xxx -ft

Stop container

# List running containers: https://docs.docker.com/engine/reference/commandline/ps/
$ docker ps -q
xxx

# Stop: https://docs.docker.com/engine/reference/commandline/stop/
$ docker stop xxx

Start stopped continers

$ docker start CONTAINER

Attach local stdin, stdout, and stderr streams to a running container

$ docker attach CONTAINER

Run a command in a running container

$ docker exec [OPTIONS] CONTAINER COMMAND [ARG...]

Remove unused images

docker image prune [OPTIONS]

Delete all containers

$ docker rm -f $(docker ps -a -q)

Delete all images

$ docker rmi -f $(docker images -q)

Delete old docker-compose image

$ docker-compose rm

When you use this command? "No such image" error happens when docker-compose up.
Ref: https://stackoverflow.com/questions/37454548/docker-compose-no-such-image

Install shell completion

Zsh
In Zsh, the completion system takes care of things. To activate completion for Docker commands, these files need to be copied or symlinked to your Zsh site-functions/ directory. For example, if you installed Zsh via Homebrew:

$ etc=/Applications/Docker.app/Contents/Resources/etc
$ ln -s $etc/docker.zsh-completion /usr/local/share/zsh/site-functions/_docker
$ ln -s $etc/docker-machine.zsh-completion /usr/local/share/zsh/site-functions/_docker-machine
$ ln -s $etc/docker-compose.zsh-completion /usr/local/share/zsh/site-functions/_docker-compose

PostgreSQL

• Run a postgres container

$ docker run --name my-pg -p 5432:5432 -e POSTGRES_USER=mttrs -e POSTGRES_PASSWORD=xxx -d postgres:latest

• Connect to the postgres container

# With docker command
$ docker exec -it my-pg psql -U mttrs

# With psql command
$ psql -h localhost -U mttrs