learn/docker/main.md

Parts of Docker

Docker File

a blueprint for building a docker image

Docker Image

a template for running docker containers. These are IMMUTABLE!!!

Docker Container

a running process (like a node app)

Docker Volume

a "folder" on the host machine that can have data which multiple containers can access

Docker Compose

runs multiple docker containers

Note: docker can basically "freeze" the dev env so that any other devs will be able to exactly reproduce it

Commands

docker ps

gives you a list of all images on your system

docker volume create (name)

docker build [flags] (directory)

builds the docker image

Options

• -t [NAMETAG] - gives the docker conainer a name (i.e. ION606/myimage:1.0)

docker run (imageId || tagName)

Options

• -p (LOCALPORT:CONTAINERPORT) - enables port forewarding between the docker container and the system

• --mount (source=volumeName) (target=mountingName)

docker stop [imageId]

Note: to stop all just use docker stop $(docker ps -a -q)