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Docker

• http://docker.com
• Build, Ship, Run
• 개발자와 시스템어드민을 위한 분산 애플리케이션용 오픈 플랫폼

Install

• https://hub.docker.com/ id 생성
• Docker 설치
  • https://www.docker.com/products/docker-desktop/
  • https://orbstack.dev/ (macOS)

Basic keywords

docker version
docker ps
docker info
docker images
docker container ls
docker container ls -a

• docker run hello-world
  • docker : 시스템에 있는 docker 사용
  • run : 서브명령, 컨테이너 실행
  • hello-world : 컨테이너에 실을 이미지 이름
• 컨테이너는 아무것도 꾸미지 않은 버전의 리눅스 운영체제
• 고래가라사대
  • docker hub 이미지 정보
    • 포함한 소프트웨어 종류와 사용법
• docker run -it -p 80:80 docker/getting-started
• stop

➜  ~ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                         NAMES
92d58318f84e        nginx               "nginx -g 'daemon off"   27 hours ago        Up 27 hours         0.0.0.0:80->80/tcp, 443/tcp   webserver
0235bd537f03        nginx               "nginx -g 'daemon off"   27 hours ago        Up 27 hours         80/tcp, 443/tcp               boring_hypatia
➜  ~ docker stop nginx
Error response from daemon: No such container: nginx
➜  ~ docker stop 92d58318f84e
92d58318f84e

실행중인 도커 접속

docker exec -it  92d58318f84e /bin/bash

이미지 불러오기

• docker pull imagename

컨테이너 전체 삭제

docker ps -aq
docker stop $(docker ps -aq)
docker rm $(docker ps -aq)

이미지 만들기

• https://docs.docker.com/get-started/workshop/02_our_app/
• git clone https://github.com/docker/getting-started-app.git
• cd getting-started-app
• create Dockerfile

# syntax=docker/dockerfile:1

FROM node:18-alpine
WORKDIR /app
COPY . .
RUN yarn install --production
CMD ["node", "src/index.js"]
EXPOSE 3000

• docker build -t getting-started .
• docker run -p 4000:3000 getting-started
• curl localhost:4000
• docker tag getting-started kenu/get-started:part2

이미지 업로드

• docker push kenu/get-started:part2

원격 이미지 로컬에서 실행

• docker run -p 4000:3000 kenu/get-started:part2
• curl localhost:4000

업로드 이미지 삭제

export USERNAME=myuser
export PASSWORD=mypass
export ORGANIZATION=myorg (if it's personal, then it's your username)
export REPOSITORY=myrepo
export TAG=latest

curl -u $USERNAME:$PASSWORD -X "DELETE" https://cloud.docker.com/v2/repositories/$ORGANIZATION/$REPOSITORY/tags/$TAG/

네트워크

• https://docs.docker.com/engine/tutorials/networkingcontainers/

AWS EC2

• docker 설치

sudo dnf update -y
sudo dnf install docker -y
sudo systemctl start docker
sudo usermod -a -G docker ec2-user
# for ec2-user permission
sudo reboot

docker ps

• docker-compose 설치
  • https://docs.docker.com/compose/install/

DOCKER_CONFIG=${DOCKER_CONFIG:-$HOME/.docker}
mkdir -p $DOCKER_CONFIG/cli-plugins

• https://github.com/docker/compose/releases/ # new version

curl -SL https://github.com/docker/compose/releases/download/v2.35.1/docker-compose-linux-x86_64 -o $DOCKER_CONFIG/cli-plugins/docker-compose
curl -SL https://github.com/docker/compose/releases/download/v2.35.1/docker-compose-linux-aarch64 -o $DOCKER_CONFIG/cli-plugins/docker-compose
chmod +x $DOCKER_CONFIG/cli-plugins/docker-compose

docker compose version

Cases

• copy file
  • docker cp d362659da5fc:/opt/app/app.log .
    • d362659da5fc: container id

참고

• Docker 창시자 발표 https://youtu.be/Q5POuMHxW-0

docker ps
docker images
docker images ubuntu
docker run -i -t ubuntu:12.10 /bin/bash

ps faxw
ls
rm -rf /var /usr /lib
ls /var
exit

ssh dockerdev
sudo -s
docker ps
docker diff 7b882b11bc8e
docker commit 7b882b11bc8e shykes/broken-ubuntu
docker run -i -t shykes/broken-ubuntu /bin/bash

docker push shykes/broken-ubuntu
https://index.docker.io

related

• docker 실습
• docker compose
• docker mysql
• docker in Windows

ref

• Docker in 12 minutes
  • https://www.youtube.com/watch?v=YFl2mCHdv24
• Docker Compose in 12 minutes
  • https://www.youtube.com/watch?v=Qw9zlE3t8Ko
• How to remove docker images containers and volumes
  • https://www.digitalocean.com/community/tutorials/how-to-remove-docker-images-containers-and-volumes
• Getting Started for non-technical
  • https://docs.docker.com/mac/
  • https://docs.docker.com/docker-for-windows/
• https://docs.docker.com/mac/step_three/
• docker/whalesay
  • https://hub.docker.com/r/docker/whalesay/
• docker for mac
  • https://pilsniak.com/how-to-install-docker-on-mac-os-using-brew/

What Else?

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