matthcol / docker202402

Docker

Containers

Create and run container

Server mode (detached)

docker run -d mariadb

One shot (removed after)

docker run --rm python

option

-i: redirect standard input -t: redirect standard output TTY

-v: mount volume (host directory or docker volume) -v externaldir:containerdir

-e, --env: environment variable -e PYTHON_VERSION -e PYTHON_VERSION=3.12

-env-file environment-file

--name containername

-p: port mapping

-w: working directory

Life cycle

docker stop|start|restart mycontainer
docker rm mycontainer
docker rm -f mycontainer

Execute cmd inside a container (after start)

docker exec -it mycontainer mycmd cmdargs

Supervision

docker ps
docker ps -a

Status: Up, Exited

Logs

docker logs mycontainer

Image

docker image ls

docker image pull mariadb docker image pull mariadb:latest docker image pull mariadb:11.2

Examples

docker run --detach --name mariadb-mountain --env MARIADB_ROOT_PASSWORD=my-secret-pw mariadb:11.2.2

bash, powershell, cmd

docker run -it --rm -v "$PWD":/usr/src/myapp -w /usr/src/myapp python:latest python hello.py docker run -it --rm -v "${PWD}:/usr/src/myapp" -w /usr/src/myapp python:latest python hello.py docker run -it --rm -v "%cd%":/usr/src/myapp -w /usr/src/myapp python:latest python hello.py

volume

docker volume create|inspect|ls|rm|prune

Dockerfile

Lexique: https://docs.docker.com/engine/reference/builder/

Networks

https://docs.docker.com/engine/reference/builder/