简单部署Docker镜像， 发布SpringBoot项目

编写一个简易的SpringBoot多模块项目项目，项目主pom文件配置如下:

<?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>

<groupId>com.wolfe</groupId>
<artifactId>spring-boot-wolfe</artifactId>
<version>1.0-SNAPSHOT</version>

<packaging>pom</packaging>

<modules>
    <module>spring-boot-practice-1</module>
</modules>

<name>spring-boot-wolfe</name>
<description>Demo project for Spring Boot</description>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    <maven.compiler.source>${java.version}</maven.compiler.source>
    <maven.compiler.target>${java.version}</maven.compiler.target>
</properties>

<dependencyManagement>
    <dependencies>
        <!-- Spring Boot 依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-dependencies</artifactId>
            <version>1.5.8.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <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>
    <plugins>
        <!-- Maven Java 编译器插件 -->
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.1</version>
            <configuration>
                <source>${java.version}</source>
                <target>${java.version}</target>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.19.1</version>
            <configuration>
                <skipTests>true</skipTests>  <!--默认关掉单元测试 -->
            </configuration>
        </plugin>
    </plugins>
</build>

</project>

子模块spring-boot-practice-1配置如下

<?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">
<parent>
    <artifactId>spring-boot-wolfe</artifactId>
    <groupId>com.wolfe</groupId>
    <version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>

<artifactId>spring-boot-practice-1</artifactId>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <mainClass>com.wolfe.practice.SpringBootPracticeApplication</mainClass>
                <layout>ZIP</layout>
            </configuration>
            <executions>
                <execution>
                    <goals>
                        <goal>repackage</goal><!--可以把依赖的包都打包到生成的Jar包中-->
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>


</project>

1. 使用 mvn clean -Dmaven.skip.test -U package 命令进行打包
2. touch Dockerfile命令创建Dockerfile文件，Dockerfile文件的配置如下：

FROM frolvlad/alpine-oraclejdk8:slim
VOLUME /tmp
ADD spring-boot-practice-1-1.0-SNAPSHOT.jar app.jar
RUN sh -c 'touch /app.jar'
ENV JAVA_OPTS=""
ENTRYPOINT [ "sh", "-c", "java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar" ]

3. 将打包后的jar文件拷贝到放有Dockerfile文件的同级目录下
4. 使用[root@localhost spring-boot]# docker build -t spring_boot_jar .命令创建docker镜像
5. docker run -d --name spring_boot_jar -p 10000:8080 spring_boot_jar
   运行docker镜像