Docker Compose 소개

중급 Docker

Mike Metzger

Data Engineering Consultant

Docker Compose란?

Docker용 추가 명령줄 도구
다중 컨테이너 애플리케이션 정의·관리
한 파일에서 컨테이너, 네트워킹, 볼륨 지정
- compose.yml 또는 compose.yaml
- 예전 파일명: docker-compose.yaml
앱 공유/데모가 쉬움

compose.yaml 예시

# Define the services
services:

  # Define the container(s), by name
  webapp:
    image: "webapp"

    # Optionally, define the port forwarding
    ports:
      - "8000:5000"

  # Define any other containers required
  redis:
    image: "redis:alpine"

애플리케이션 시작

docker compose up
- 구버전: docker-compose up
- docker compose -f <yaml> up
- docker compose up -d

$ docker compose up

[+] Running 2/0
 ✔ Network composetest_default    Created
 ✔ Container composetest-redis-1  Created                                                                                                             0.0s
 ✔ Container composetest-web-1    Created                                                                                                             0.0s
Attaching to redis-1, web-1
redis-1  | 1:C 11 Mar 2024 04:09:51.754 * oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
web-1    |  * Serving Flask app 'app.py'
web-1    |  * Running on http://127.0.0.1:5000

애플리케이션 상태 확인

docker compose ls

$ docker compose ls

NAME                STATUS              CONFIG FILES
webapp              running(2)          /webapp/docker-compose.yml

애플리케이션 중지

docker compose down
- docker-compose down
- docker compose -f <yaml> down

$ docker compose down

[+] Running 3/3
 ✔ Container composetest-redis-1  Removed                                                                                                             0.1s
 ✔ Container composetest-web-1    Removed                                                                                                            10.1s
 ✔ Network composetest_default    Removed                                                                                                             0.1s

연습해 봅시다!

중급 Docker