✨ spring-boot-demo-docker 完成

pom.xml

@@ -37,6 +37,7 @@
         <module>spring-boot-demo-war</module>
         <module>spring-boot-demo-elasticsearch</module>
         <module>spring-boot-demo-neo4j</module>
+        <module>spring-boot-demo-docker</module>
     </modules>
     <packaging>pom</packaging>
 

spring-boot-demo-docker/.gitignore

@@ -0,0 +1,25 @@
+/target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/build/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/

spring-boot-demo-docker/Dockerfile

@@ -0,0 +1,20 @@
+# 基础镜像
+FROM openjdk:8-jdk-alpine
+
+# 作者信息
+MAINTAINER "Yangkai.Shen [email protected]"
+
+# 添加一个存储空间
+VOLUME /tmp
+
+# 暴露8080端口
+EXPOSE 8080
+
+# 添加变量，如果使用dockerfile-maven-plugin，则会自动替换这里的变量内容
+ARG JAR_FILE=target/spring-boot-demo-docker.jar
+
+# 往容器中添加jar包
+ADD ${JAR_FILE} app.jar
+
+# 启动镜像自动运行程序
+ENTRYPOINT ["java","-Djava.security.egd=file:/dev/urandom","-jar","/app.jar"]

spring-boot-demo-docker/README.md

@@ -0,0 +1,116 @@
+# spring-boot-demo-docker
+
+> 本 demo 主要演示了如何容器化一个  Spring Boot 项目。通过 `Dockerfile` 的方式打包成一个 images 。
+
+## Dockerfile
+
+```dockerfile
+# 基础镜像
+FROM openjdk:8-jdk-alpine
+
+# 作者信息
+MAINTAINER "Yangkai.Shen [email protected]"
+
+# 添加一个存储空间
+VOLUME /tmp
+
+# 暴露8080端口
+EXPOSE 8080
+
+# 添加变量，如果使用dockerfile-maven-plugin，则会自动替换这里的变量内容
+ARG JAR_FILE=target/spring-boot-demo-docker.jar
+
+# 往容器中添加jar包
+ADD ${JAR_FILE} app.jar
+
+# 启动镜像自动运行程序
+ENTRYPOINT ["java","-Djava.security.egd=file:/dev/urandom","-jar","/app.jar"]
+```
+
+## 打包方式
+
+### 手动打包
+
+1. 前往 Dockerfile 目录，打开命令行执行
+
+   ```bash
+   $ docker build -t spring-boot-demo-docker .
+   ```
+
+2. 查看生成镜像
+
+   ```bash
+   $ docker images
+
+   REPOSITORY                                                        TAG                 IMAGE ID            CREATED             SIZE
+   spring-boot-demo-docker                                           latest	      bc29a29ffca0        2 hours ago         119MB
+   openjdk                                                           8-jdk-alpine        97bc1352afde        5 weeks ago         103MB
+   ```
+
+3. 运行
+
+   ```bash
+   $ docker run -d -p 9090:8080 spring-boot-demo-docker
+   ```
+
+###  使用 maven 插件打包
+
+1. pom.xml 中添加插件
+
+2. ```xml
+   <properties>
+       <dockerfile-version>1.4.9</dockerfile-version>
+   </properties>
+
+   <plugins>      
+       <plugin>
+           <groupId>com.spotify</groupId>
+           <artifactId>dockerfile-maven-plugin</artifactId>
+           <version>${dockerfile-version}</version>
+           <configuration>
+               <repository>${project.build.finalName}</repository>
+               <tag>${project.version}</tag>
+               <buildArgs>
+                   <JAR_FILE>target/${project.build.finalName}.jar</JAR_FILE>
+               </buildArgs>
+           </configuration>
+           <executions>
+               <execution>
+                   <id>default</id>
+                   <phase>package</phase>
+                   <goals>
+                       <goal>build</goal>
+                   </goals>
+               </execution>
+           </executions>
+       </plugin>
+   </plugins>
+   ```
+
+2. 执行mvn打包命令，因为插件中 `execution` 节点配置了 package，所以会在打包的时候自动执行 build 命令。
+
+   ```bash
+   $ mvn clean package -Dmaven.test.skip=true
+   ```
+
+3. 查看镜像
+
+   ```bash
+   $ docker images
+
+   REPOSITORY                                                        TAG                 IMAGE ID            CREATED             SIZE
+   spring-boot-demo-docker                                           1.0.0-SNAPSHOT      bc29a29ffca0        2 hours ago         119MB
+   openjdk                                                           8-jdk-alpine        97bc1352afde        5 weeks ago         103MB
+   ```
+
+4. 运行
+
+   ```bash
+   $ docker run -d -p 9090:8080 spring-boot-demo-docker:1.0.0-SNAPSHOT
+   ```
+
+## 参考
+
+- docker 官方文档：https://docs.docker.com/
+- Dockerfile 命令，参考文档：https://docs.docker.com/engine/reference/builder/
+- maven插件使用，参考地址：https://github.com/spotify/dockerfile-maven

spring-boot-demo-docker/pom.xml

@@ -0,0 +1,70 @@
+<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>spring-boot-demo-docker</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+
+    <name>spring-boot-demo-docker</name>
+    <description>Demo project for Spring Boot</description>
+
+    <parent>
+        <groupId>com.xkcoding</groupId>
+        <artifactId>spring-boot-demo</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <java.version>1.8</java.version>
+        <dockerfile-version>1.4.9</dockerfile-version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>spring-boot-demo-docker</finalName>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <groupId>com.spotify</groupId>
+                <artifactId>dockerfile-maven-plugin</artifactId>
+                <version>${dockerfile-version}</version>
+                <configuration>
+                    <repository>${project.build.finalName}</repository>
+                    <tag>${project.version}</tag>
+                    <buildArgs>
+                        <JAR_FILE>target/${project.build.finalName}.jar</JAR_FILE>
+                    </buildArgs>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>default</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>build</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

spring-boot-demo-docker/src/main/java/com/xkcoding/docker/SpringBootDemoDockerApplication.java

@@ -0,0 +1,25 @@
+package com.xkcoding.docker;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * <p>
+ * 启动器
+ * </p>
+ *
+ * @package: com.xkcoding.docker
+ * @description: 启动器
+ * @author: yangkai.shen
+ * @date: Created in 2018-11-29 14:59
+ * @copyright: Copyright (c) 2018
+ * @version: V1.0
+ * @modified: yangkai.shen
+ */
+@SpringBootApplication
+public class SpringBootDemoDockerApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootDemoDockerApplication.class, args);
+    }
+}

spring-boot-demo-docker/src/main/java/com/xkcoding/docker/controller/HelloController.java

@@ -0,0 +1,27 @@
+package com.xkcoding.docker.controller;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * <p>
+ * Hello Controller
+ * </p>
+ *
+ * @package: com.xkcoding.docker.controller
+ * @description: Hello Controller
+ * @author: yangkai.shen
+ * @date: Created in 2018-11-29 14:58
+ * @copyright: Copyright (c) 2018
+ * @version: V1.0
+ * @modified: yangkai.shen
+ */
+@RestController
+@RequestMapping
+public class HelloController {
+    @GetMapping
+    public String hello() {
+        return "Hello,From Docker!";
+    }
+}

spring-boot-demo-docker/src/main/resources/application.yml

@@ -0,0 +1,4 @@
+server:
+  port: 8080
+  servlet:
+    context-path: /demo

spring-boot-demo-docker/src/test/java/com/xkcoding/docker/SpringBootDemoDockerApplicationTests.java

@@ -0,0 +1,16 @@
+package com.xkcoding.docker;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class SpringBootDemoDockerApplicationTests {
+
+    @Test
+    public void contextLoads() {
+    }
+
+}