Homebrew에서 macOS에 Docker 설치하기 Hello world
2022-10-06 last update
5 minutes reading MacOSX 도커 homebrew HelloWorld개요
환경
Homebrew에서 Docker 설치
$ brew cask install docker
==> Satisfying dependencies
==> Downloading https://download.docker.com/mac/stable/37199/Docker.dmg
######################################################################## 100.0%
==> Verifying SHA-256 checksum for Cask 'docker'.
==> Installing Cask docker
==> Moving App 'Docker.app' to '/Applications/Docker.app'.
🍺 docker was successfully installed!
설치했지만 docker 명령을 찾을 수 없습니다.
$ docker --version
-bash: docker: command not found
Docker.app 시작
Docker.app를 시작하면 docker 명령을 사용할 수 있습니다.
$ open /Applications/Docker.app
Docker ID는 필요하지 않으면 생성하지 않아도됩니다.
"Docker Desktop is now up and running!"
이제 docker 명령을 사용할 수 있습니다.
$ docker --version
Docker version 19.03.1, build 74b1e89
$ which docker
/usr/local/bin/docker
$ ls -la /usr/local/bin/docker
lrwxr-xr-x 1 root admin 54 8 9 09:44 /usr/local/bin/docker -> /Applications/Docker.app/Contents/Resources/bin/docker
설치된 Docker 정보
인스톨 되는 Docker 의 버젼 등은 Homebrew Cask 의 소스 코드에 실려 있다.
homebrew-cask/docker.rb at 5037705e8ed028ae1a45c6fb7d6b94e5fb0cc8d8 · Homebrew/homebrew-cask · GitHub
if MacOS.version <= :el_capitan
version '18.06.1-ce-mac73,26764'
sha256 '3429eac38cf0d198039ad6e1adce0016f642cdb914a34c67ce40f069cdb047a5'
else
version '2.1.0.1,37199'
sha256 'b638696702d88308a49c5ff985055b6bb329afcfcd0c3ffda1c3fed6e078d01a'
end
Docker 공식 Hello world 실행
Docker가 공식적으로 제공하는 hello-world 이미지가 있습니다.
hello-world - Docker Hub
Docker Official Images
Hello World! (an example of minimal Dockerization)
docker run으로 hello-world 이미지를 다운로드하고 이미지에서 새 컨테이너를 만들고 시작하면 메시지가 표시됩니다.
$ docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete
Digest: sha256:6540fc08ee6e6b7b63468dc3317e3303aae178cb8a45ed3123180328bcc1d20f
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
docker images로 만든 Docker 이미지 목록을 확인합니다.
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
hello-world latest fce289e99eb9 7 months ago 1.84kB
docker ps -a로 컨테이너 목록을 표시합니다.
$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f2d8db4444fa hello-world "/hello" 7 minutes ago Exited (0) 7 minutes ago pensive_chaum
docker rm 으로 컨테이너 ID를 지정해 컨테이너를 삭제.
$ docker rm f2d8db4444fa
f2d8db4444fa