Tomcat

• In the docker-compose.yml file, properties under services are called context.

• For example:

  version: "3.8"
  services:
    mongodb:
      image: mongodb
      build:
      context: ./mongodb
      ports:
      - "27017:27017"
    api:
      image: rss_trendy_api
      build:
        context: ./api
        dockerfile: Dockerfile.dev
      volumes:
      - /app/node_modules
      - ./api:/app
      environment:
      - mongoDBServer=mongoDB
      ports:
      - "5000:5000"
      links:
      - mongodb
    client:
      image: rss_trendy_client
      build:
      context: ./client
      dockerfile: Dockerfile.dev
      volumes:
      - /app/node_modules
      - ./client:/app
      ports:
      - "3000:3000"

  mongodb, api, and client are three contexts in this docker compose.