Docker CLI Commands

gistfile1.md

Key Docker Commands

IMAGES

docker pull [image-name]

• pull image onto machine

docker images

• list images on your machine

docker rmi [imageID]

• remove image from machine

CONTAINERS

docker run [image-name]

• run an image, DLs it if not on machine

docker run -p 8080:80 [image-name]

• run an image and bind port from docker (8080 here) to container (80)

docker inspect [container-name]

• gives you information about where the container is mounted and where volume files are written

docker ps -a

• view all containers on your machine (regardless of running)

docker rm [containerID]

• remove container from machine

Volumes

docker run -p 8080:80 -v var/www [image-name]

• run image, bind port, set writable volume at "var/www" that docker host writes peristent files to. Docker will automatically choose where this "var/www" is written as a managed volume

docker rm -v [container-name]

• removes the container along w/ the managed volume by docker. If you do the command below in which you specificy the volume yourself, -v will not affect it on rm command

docker run -p 8080:80 -v $(pwd):/var/www [image-name]

• run image, bind port, set writable volume at "var/www" that docker host writes peristent files to in the current working directory (wherever the command was ran)

DotNet

docker pull mcr.microsoft.com/dotnet/sdk

• pull latest Dotnet SDK image

docker run -it -p 8080:5000 -v ${PWD}:/app -w "/app" mcr.microsoft.com/dotnet/core/sdk /bin/bash

• run inside an MVC project, will open a bash shell to that folder on your LOCAL machine from within the container (Docker has made this a volume visible to the container)

^ Demonstrates a nice feature in docker, source code can be local, but ran inside a container so you can run your app w/ your needed frameworks on an OS just using docker (no need to install them locally)

Share images

docker login

docker push <username>/<image_name>

• pushes your image to a public docker hub repo (upload might take a while)