docker-compose启动项目-优快云博客

docker-compose.yml

version: '3'
services:
  # 服务的名称
  web:
    image: jc0803kevin/springboot-docker:1.0.0
    deploy:
      replicas: 1  # 指定要运行的实例数量
    ports:
      - "18080:18080"  # 端口映射，第一个是宿主机的端口，第二个是容器的端口

启动服务

在docker-compose.yml 目录下面执行

docker-compose up -d

# -d 标识后台启动

查看日志

# web 标识对于的service名称
root@LAPTOP-42HSF5M2:/mnt/d/wslwork/docker# docker-compose logs web
Attaching to docker_web_1

web_1  | 2025-03-09 11:09:11.079  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 18080 (http) with context path ''
web_1  | 2025-03-09 11:09:11.089  INFO 1 --- [           main] icu.kevin.docker.DockerApp               : Started DockerApp in 1.533 seconds (JVM running for 1.853)
web_1  | 2025-03-09 11:10:42.386  INFO 1 --- [io-18080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
web_1  | 2025-03-09 11:10:42.387  INFO 1 --- [io-18080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
web_1  | 2025-03-09 11:10:42.396  INFO 1 --- [io-18080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 8 ms
root@LAPTOP-42HSF5M2:/mnt/d/wslwork/docker#

查看使用的image

root@LAPTOP-42HSF5M2:/mnt/d/wslwork/docker# docker-compose images
 Container              Repository              Tag      Image Id       Size
------------------------------------------------------------------------------
docker_web_1   jc0803kevin/springboot-docker   1.0.0   e71678655787   121.4 MB
root@LAPTOP-42HSF5M2:/mnt/d/wslwork/docker#

启动多个副本随机端口

version: '3'
services:
  # 服务的名称
  web:
    image: jc0803kevin/springboot-docker:1.0.0
    deploy:
      replicas: 3  # 启动 3 个副本
    ports:
      - "18080"  # 只指定容器端口，宿主机端口由 Docker 自动分配

启动多个副本固定端口

version: '3'
services:
  # 服务的名称
  web:
    image: jc0803kevin/springboot-docker:1.0.0
    ports:
      - "18080-18082:18080"  # 映射宿主机端口范围到容器端口

root@LAPTOP-42HSF5M2:/mnt/d/wslwork/docker# docker-compose up -d
Creating network "docker_default" with the default driver
Creating docker_web_1 ... done
root@LAPTOP-42HSF5M2:/mnt/d/wslwork/docker# docker-compose scale web=3
WARNING: The scale command is deprecated. Use the up command with the --scale flag instead.
WARNING: The "web" service specifies a port on the host. If multiple containers for this service are created on a single host, the port will clash.
Creating docker_web_2 ... done
Creating docker_web_3 ... done
root@LAPTOP-42HSF5M2:/mnt/d/wslwork/docker#

root@LAPTOP-42HSF5M2:/mnt/d/wslwork/docker# docker-compose ps
    Name            Command        State                      Ports
---------------------------------------------------------------------------------------
docker_web_1   java -jar app.jar   Up      0.0.0.0:18080->18080/tcp,:::18080->18080/tcp
docker_web_2   java -jar app.jar   Up      0.0.0.0:18082->18080/tcp,:::18082->18080/tcp
docker_web_3   java -jar app.jar   Up      0.0.0.0:18081->18080/tcp,:::18081->18080/tcp
root@LAPTOP-42HSF5M2:/mnt/d/wslwork/docker#