docker

约 640 字大约 2 分钟

2025-08-20

Dockerfile 模板

# 基础镜像，必需
FROM <image-name>:<version>
# 设置工作目录，必需
WORKDIR /app
# 配置环境变量
ENV ENVIRONMENT_VARIABLE=VALUE
# 执行命令，用于安装环境依赖包
RUN cmd to install dependencies
# 将项目文件复制到工作目录，必需
COPY . /app
# 重置项目入口
ENTRYPOINT []
# 运行项目的一般命令，必需
CMD ["sh", "-c", "cmd to run app"]

docker-compose 模板

以 mysql 和 nacos 容器组合为样例。

docker-compose.yml

docker-compose 主文件

version: "3"
services:
  mysql:
    image: mysql/mysql-server:8.0.32
    container_name: mysql
    restart: always
    volumes:
      - ${DATA_DIRECTORY}/data/mysql/data:/var/lib/mysql
    environment:
      - MYSQL_ROOT_PASSWORD=${MYSQL_ROOT_PASSWORD:-passwd} # mysql数据库root账号的密码
      - TZ=Asia/Shanghai
      - NACOS_USERNAME=${NACOS_USERNAME:-root} # 后续nacos所用管理员账号
      - NACOS_PASSWORD=${NACOS_PASSWORD:-passwd} # 后续nacos所用管理员密码
    ports:
      - ${MYSQL_PUBLIC_PORT:-3306}:3306
    networks:
      network:
        ipv4_address: ${MYSQL_HOST:-172.20.0.2}
    healthcheck:
      test: ["CMD", "mysqladmin", "ping", "-h", "localhost", "-u", "root", "-p${MYSQL_ROOT_PASSWORD:-passwd}"]
      interval: 10s
      timeout: 10s
      retries: 10

  nacos:
    image: nacos/nacos-server:1.4.2
    container_name: nacos
    restart: always
    depends_on:
      mysql:
        condition: service_healthy
    environment:
      - JVM_XMX=384m
      - JVM_XMS=384m
      - JVM_XMN=192m
      - MODE=standalone
      - SPRING_DATASOURCE_PLATFORM=mysql
      - MYSQL_SERVICE_HOST=${MYSQL_HOST:-172.20.0.2}
      - MYSQL_SERVICE_PORT=3306
      - MYSQL_SERVICE_USER=root
      - MYSQL_SERVICE_PASSWORD=${MYSQL_ROOT_PASSWORD:-passwd} # 与上面数据库密码一致
      - MYSQL_SERVICE_DB_NAME=nacos
      - NACOS_AUTH_ENABLE=true # 开启鉴权
    ports:
      - ${NACOS_PORT:-8848}:8848
    healthcheck:
      test: curl -f http://${NACOS_HOST:-172.20.0.3}:8848/nacos/index.html || exit 1
      interval: 10s
      timeout: 10s
      retries: 12
    networks:
      network:
        ipv4_address: ${NACOS_HOST:-172.20.0.3}

  autohealth: # 监控不健康的容器进行重启
    restart: always
    container_name: autohealth
    image: willfarrell/autoheal
    environment:
      - AUTOHEAL_CONTAINER_LABEL=all
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock

networks:
  network:
    driver: bridge
    ipam:
      config:
        - subnet: ${SUBNET:-172.20.0.0/16}