Docker Survival Guide

Get a public docker image

docker pull image 

Example:

docker pull mysql 

See what is running

docker ps 

Run a container

docker run --name nameWeGiveIt -d -it -p 80:80 image 

-d: detached, as in server

-it: interactive+tty. Without this commands like docker inspect won‘t be able to display anything to you.

-p a:b Publish container port b as port a (or ip:port) on the host.

Examples:

docker run --name mysql -d -it -p 8888:80 mysql

And to see this configuration:

docker container port mysql

Run a container and override entrypoint

docker run -it --entrypoint sh image

This runs the interactive shell (sh) instead of the defined entrypoint.

Run bash in a running container

docker exec -it containerIdOrName /bin/bash 

...or if bash is not installed, the default shell:

docker exec -it containerIdOrName /bin/sh

Copy file into container

docker cp foo.txt mycontainer:/foo.txt 
docker cp mycontainer:/foo.txt foo.txt 

Check container IP address

docker inspect containerIdOrName  

Stop container

docker stop container 

Container can be restarted, process is stopped, file system changes are preserved.

Start container

docker start containerIdOrName

Starts a previously stopped container.

docker start -ai containerIdOrName

Starts a previously stopped container and attach interactive.

Remove container

docker rm containerIdOrName

Stops and removes a container, file system and all. Image is preserved.

Pause container

docker pause containerIdOrName

Freezes all activity, only possible for Hyper-V containers.

Show containerIdOrName

docker inspect --format="{{.Id}}" containerIdOrName

Access via powershell (Windows containers)

Enter-PSSession containerIdOrName -RunAsAdministrator

Build a container via Dockerfile and tag it

docker build -t myRepo/myContainer:myVersion .