[Docker] Mac에서 도커 시작하기, Docker Tutorial

 

도커 커뮤니티 사이트(hub.docker.com)에 접속해 회원가입 후 첫 화면에서 보이는 "Get started Started with Docker Desktop"을 통해 Docker.dmg 파일을 통해 설치하면 된다.

Docker Hub

 

설치가 정상적으로 되었으면, '터미널'에서 설치된 버전이 무엇인지 확인이 가능하다.

 

% docker version
Client: Docker Engine - Community
 Version:           19.03.8
 API version:       1.40
 Go version:        go1.12.17
 Git commit:        afacb8b
 Built:             Wed Mar 11 01:21:11 2020
 OS/Arch:           darwin/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.8
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.17
  Git commit:       afacb8b
  Built:            Wed Mar 11 01:29:16 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          v1.2.13
  GitCommit:        7ad184331fa3e55e52b890ea95e65ba581ae3429
 runc:
  Version:          1.0.0-rc10
  GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

 

요즈음의 도커는 GUI를 제공하는 Application를 통해 하고 있으나, 사실은 명령행을 통해 docker를 조작한다.

다음 Step을 따라가면 도커를 설치한 후 테스트(build, run)해볼 수 있는 것 같다.

Step 1.

First, clone a repository

The Getting Started project is a simple GitHub repository which contains everything you need to build an image and run it as a container.

Install Git if you don’t have it already.

 

git clone https://github.com/docker/doodle.git

 

Step 2.

Now let's build and tag a Docker image.

A Docker image is a private filesystem, just for your container. It provides all the files and code your container will need. Running the docker build command creates a Docker image using the Dockerfile. This built image is in your machine's local Docker image registry.

 

cd /docker-tutorial &&
docker image build -t [회원ID]/docker-tutorial .

 

Step 3.

Great! Now let's run your first container.

Running a container launches your software with private resources, securely isolated from the rest of your machine.

 

docker container run -it --rm [회원ID]/docker-tutorial

 

또한, 다음의 명령어를 통해 도커의 이미지를 포트 포워딩을 하여야 로컬 환경에서 확인이 가능하다.

 

docker container run -d -p 80:80 [회원ID]/docker-tutorial

 

You'll notice a few flags being used. Here's some more info on them:

• -d → run the container in detached mode (in the background)
• -p 80:80 → map port 80 of the host to port 80 in the container
• [회원ID]/cheers2019 → the image to use

정상적으로 포트 포워딩이 진행이 되었다면, 도커 컨테이너에 어떻게 할당되어 있는 지 확인이 가능하다.

 

% docker container ls
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                NAMES
37b9a68970d0        docker101tutorial   "/docker-entrypoint.…"   31 minutes ago      Up 31 minutes       0.0.0.0:80->80/tcp   docker-tutorial

 

Step 4.

Share your image on Docker Hub

Once you're ready to share your container with the world, push the image that describes it to Docker Hub.

 

docker login &&
docker push [회원ID]/docker-tutorial