Spring Boot 项目 Docker部署，并挂载配置文件到宿主机上

username: root
password: root123
server:
  port: 8006

package com.olive.dockerbuild;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;


@SpringBootApplication
public class DockerBuildApplication {


    public static void main(String[] args) {
        SpringApplication.run(DockerBuildApplication.class, args);
    }

}

package com.olive.dockerbuild.controller;


import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;


@RestController
public class  WebController{

     @Value("${username}")
     private String username;

     @Value("${password}")
     private String password;

     @RequestMapping("/printUserInfo")
     public String printUserInfo(){
         return "User {username=" + username + ",password=" + password + "}";
     }

}

#添加Java启动的必要镜像
FROM  java:8
#将本地文件挂载到当前容器
VOLUME  /tmp
#复制jar文件和配置文件所在的目录到容器里
ADD  my-app.jar  /app.jar
ADD  conf       /conf
#声明需要暴露的端口
EXPOSE  8006
#配置容器启动后执行的命令,并指定使用项目外部的配置文件
ENTRYPOINT  ["java", "-Xms256m", "-Xmx256m", "-Djava.security.egd=file:/dev/./urandom", "-jar", "/app.jar", "--spring.config.location=/conf/application.yml"]

vi conf/application.yml
username: devUser
:wq

# -t 是指定镜像名称和版本号   myapp是镜像名, :后面的是版本号, . 代表指定当前目录的Dockerfile构建
docker build -t myapp:v_1.0 .

docker run -d -p 8006:8006  --name myapp myapp:v_1.0

curl 127.0.0.1:8006/printUserInfo

docker stop myapp
docker rm myapp

vi conf/application.yml
username: prodUser
:wq

docker run -d -p 8006:8006 -v /usr/springboot/docker-build/conf:/conf --name myapp myapp:v_1.0

curl 127.0.0.1:8006/printUserInfo

vi conf/application.yml
username: prodUser_good
:wq

docker restart myapp