Container之間有關係時可以用docker command中的–link搞定
當有多個Container需要連結時我們會希望能撰寫一份設定檔定義Container之間的關係然後執行就好
這就是docker-compose在做的事
撰寫docker-compose.yml定義各Container link relation
然後run docker-compose up -d

Command

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docker-compose -f ./docker-compose.yml up -d

docker-compose.yml example

以下設定表示
faceblock是ap server
zombodb_postgres是postgres database
zombodb_elastic是elasticsearch database
faceblock相依於zombodb_postgres
zombodb_postgres相依於zombodb_elastic

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faceblock:
  build: ./faceblock # DockerFile location
  ports: # export ports
   - "3001:3000"
   - "3043:443"
  links: # dependency
   - zombodb_postgres
  entrypoint: /execute.sh
zombodb_postgres:
  build: ./postgres
  ports:
   - "5432:5432"
  links:
   - zombodb_elastic
  restart: always # auto restart while exit
zombodb_elastic:
  build: ./elasticsearch
  ports:
   - "9200:9200"
   - "9300:9300"
  restart: always