nginx 反向代理tomcat3个节点
yaml 文件配置

version: '3'
services:
  nginx:
    hostname: nginx
    build:
      context: ./nginx
      dockerfile: Dockerfile
    ports:
      - 80:80
    links:
      - tomcat01:tomcat01
      - tomcat02:tomcat02
      - tomcat03:tomcat03
    volumes:
      - ./webapps:/opt/webapps
    depends_on:
      - mysql
      - tomcat01
      - tomcat02
      - tomcat03

  tomcat01:
    hostname: tomcat01
    build: ./tomcat
    links:
      - mysql:mysql-db
    volumes:
      - ./webapps:/usr/local/apache-tomcat-8.0.46/webapps

  tomcat02:
    hostname: tomcat02
    build: ./tomcat
    links:
      - mysql:mysql-db
    volumes:
      - ./webapps:/usr/local/apache-tomcat-8.0.46/webapps

  tomcat03:
    hostname: tomcat03
    build: ./tomcat
    links:
      - mysql:mysql-db
    volumes:
      - ./webapps:/usr/local/apache-tomcat-8.0.46/webapps

  mysql:
    hostname: mysql
    image: mysql:5.6
    ports:
      - 3306:3306
    volumes:
      - ./mysql/conf:/etc/mysql/conf.d
      - ./mysql/data:/var/lib/mysql
    environment:
      MYSQL_ROOT_PASSWORD: 123456
      MYSQL_DATABASE: db
      MYSQL_USER: user
      MYSQL_PASSWORD: user123