一、Docker-compse安装
- 下载docker-compose
sudo curl -L "https://github.com/docker/compose/releases/download/1.24.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
- 授权
chmod 777 /usr/local/bin/docker-compose
- 查看版本
[root@192 ~]# docker-compose version docker-compose version 1.24.1, build 4667896b docker-py version: 3.7.3 CPython version: 3.6.8 OpenSSL version: OpenSSL 1.1.0j 20 Nov 2018
二、准备java项目
1. 创建springboot项目
- pom文件
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.3.5.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.example</groupId> <artifactId>docker_images</artifactId> <version>0.0.1-SNAPSHOT</version> <name>docker_images</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- swagger --> <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger-ui --> <dependency> <groupId>com.github.xiaoymin</groupId> <artifactId>swagger-bootstrap-ui</artifactId> <version>1.9.6</version> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.9.2</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
- 配置swagger和编写测试接口
## 1. 引入swagger是方便测试 package com.example.docker_images.config; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.web.cors.CorsConfiguration; import org.springframework.web.cors.UrlBasedCorsConfigurationSource; import org.springframework.web.filter.CorsFilter; import org.springframework.web.servlet.config.annotation.CorsRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; import springfox.documentation.builders.ApiInfoBuilder; import springfox.documentation.builders.PathSelectors; import springfox.documentation.builders.RequestHandlerSelectors; import springfox.documentation.service.ApiInfo; import springfox.documentation.spi.DocumentationType; import springfox.documentation.spring.web.plugins.Docket; import springfox.documentation.swagger2.annotations.EnableSwagger2; /** * @author Javacfox */ @Configuration @EnableSwagger2 public class Swagger2Config { /** * 设置swagger跨域，提供给service调用 * @return */ @Bean public WebMvcConfigurer crossConfigurer(){ WebMvcConfigurer webMvcConfigurerAdapter = new WebMvcConfigurer() { @Override public void addCorsMappings(CorsRegistry registry) { registry.addMapping("/v2/api-docs"); registry.addMapping("/**"); } }; return webMvcConfigurerAdapter; } @Bean public Docket createRestApi(){ return new Docket(DocumentationType.SWAGGER_2) .apiInfo(apiInfo()) .select() //基础扫描包路径 .apis(RequestHandlerSelectors.basePackage("com.example.docker_images.controller")) .paths(PathSelectors.any()) .build(); } private ApiInfo apiInfo(){ return new ApiInfoBuilder() .title("java") .description("java项目打包成docker images并运行") .version("1.0.0") .build(); } private CorsConfiguration buildConfig() { CorsConfiguration corsConfiguration = new CorsConfiguration(); // 1允许任何域名使用 corsConfiguration.addAllowedOrigin("*"); // 2允许任何头 corsConfiguration.addAllowedHeader("*"); // 3允许任何方法（post、get等） corsConfiguration.addAllowedMethod("*"); return corsConfiguration; } @Bean public CorsFilter corsFilter() { UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(); source.registerCorsConfiguration("/**", buildConfig()); return new CorsFilter(source); } } # 2. 接口编写 package com.example.docker_images.controller; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("/hello") public class HelloController { @GetMapping("/sayHello") public String say(String userName){ return "hello,"+userName+"!"; } } # 3. 主类 package com.example.docker_images; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class DockerImagesApplication { public static void main(String[] args) { SpringApplication.run(DockerImagesApplication.class, args); } }
上面是所有的java项目，非常简单，目前只是为了测试。
2. 编写dockerFile、docker-compose.yml文件
- dockerFile
# 以jdk8为基础镜像 FROM openjdk:8 # 描述 LABEL description="Java 8" # 暴露接口 EXPOSE 8088 # 将主机中的jar包添加到镜像中 ADD /docker_images-0.0.1-SNAPSHOT.jar docker_images-0.0.1-SNAPSHOT.jar # 运行jar包 ENTRYPOINT ["java", "-jar","docker_images-0.0.1-SNAPSHOT.jar"]
- docker-compose.yml
version: '3' services: test: container_name: java_test #配置容器名 build: context: . dockerfile: DockerFile #指定dockerFile文件 image: java/test:8.0.0 # 指定镜像名 ports: - "8088:8088" # 暴露端口 volumes: - /logs:/logs # 创建容器数据卷
3. 创建并运行镜像
- 上传文件到服务器：/root/docker-image
- 到服务器命令台
[root@192 ~]# cd /root/docker_image [root@192 docker_image]# ll total 26384 -rw-r--r--. 1 root root 217 Nov 15 20:08 docker-compose.yml -rw-r--r--. 1 root root 188 Nov 15 04:32 DockerFile -rw-r--r--. 1 root root 27005222 Nov 12 10:27 docker_images-0.0.1-SNAPSHOT.jar [root@192 docker_image]# docker-compose build Building test Step 1/5 : FROM openjdk:8 Trying to pull repository docker.io/library/openjdk ... 8: Pulling from docker.io/library/openjdk e4c3d3e4f7b0: Pull complete 101c41d0463b: Pull complete 8275efcd805f: Pull complete 751620502a7a: Pull complete a59da3a7d0e7: Pull complete 5ad32ac1e527: Pull complete 7ee60316f31a: Pull complete Digest: sha256:44713efa363430c6d991f59bbc47238838ecf09a2df4dfb8bbbb07a55f8aeeae Status: Downloaded newer image for docker.io/openjdk:8 ---> 192ceee8f2fd Step 2/5 : LABEL description "Java 8" ---> Running in 4b14bbeddd1d ---> 1b5324a856ad Removing intermediate container 4b14bbeddd1d Step 3/5 : EXPOSE 8088 ---> Running in e08c74d7f0dd ---> bb0a7991cb0e Removing intermediate container e08c74d7f0dd Step 4/5 : ADD /docker_images-0.0.1-SNAPSHOT.jar docker_images-0.0.1-SNAPSHOT.jar ---> 8fa5fc5834ff Removing intermediate container 32c95ff2d8a0 Step 5/5 : ENTRYPOINT java -jar docker_images-0.0.1-SNAPSHOT.jar ---> Running in c40f5144492f ---> b7258eff2bc4 Removing intermediate container c40f5144492f Successfully built b7258eff2bc4 [root@192 docker_image]# docker-compose up -d Creating java_test ... done [root@192 docker_image]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 61551d9dbee7 java/test:8.0.0 "java -jar docker_..." 7 seconds ago Up 7 seconds 0.0.0.0:8088->8088/tcp java_test
步骤解说：
- 进入到jar包所在文件目录
- 创建镜像：
docker-compose build - 运行镜像：
docker-compose up -d
三、访问测试
image
