docker部署springboot項目 原

安裝docker

菜鳥教程

springboot項目

maven依賴

<?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>boottest</groupId>
    <artifactId>com.ityang.boot</artifactId>
    <version>1.0-SNAPSHOT</version>
    <name>boottest</name>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
    </parent>

    <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>

    <properties>
        <java.version>1.8</java.version>
    </properties>


    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

啓動和rest服務類

@SpringBootApplication
@RestController
public class StartApp {
    public static void main(String[] args) {
        SpringApplication.run(StartApp.class, args);
    }

    @RequestMapping("/")
    public String index() {
        return "hello spring boot";
    }
}

啓動項目，瀏覽器訪問 localhost:8080

編寫Dockerfile

在項目 /src/main目錄下新建目錄docker，在/src/main/docker下新建文件 Dockerfile，內容爲：

# 基礎鏡像 這裏使用國內網易鏡像
FROM hub.c.163.com/dwyane/openjdk:8
#掛載宿主/tmp目錄到容器的/tmp目錄
VOLUME /tmp
# 拷貝文件(maven打包後的jar文件)，並重命名爲 app.jar
ADD com.ityang.boot-1.0-SNAPSHOT.jar app.jar
# 啓動容器後執行一些命令
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

項目添加docker-maven-plugin插件

<!-- Docker maven plugin start -->
            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>docker-maven-plugin</artifactId>
                <version>0.4.13</version>
                <configuration>
					<!--[a-z 0-9] 不然docker:build會報錯-->
                    <imageName>dockerspringboot</imageName>
<dockerDirectory>${project.basedir}/src/main/docker</dockerDirectory>
                    <resources>
                        <resource>
                            <targetPath>/</targetPath>
                            <directory>${project.build.directory}</directory>
                            <include>${project.build.finalName}.jar</include>
                        </resource>
                    </resources>
                </configuration>
            </plugin>
            <!-- Docker maven plugin end -->

需要注意的是，鏡像名稱必須爲 a-z（小寫）和0-9 的值，否則docker:build 報錯

構建鏡像文件

執行命令：

$ mvn clean package  docker:build

或者分開執行：

$ mvn clean package
$ mvn docker:build

部分控制檯信息：

[INFO] --- docker-maven-plugin:0.4.13:build (default-cli) @ com.ityang.boot ---
[INFO] Copying /Users/yangzhenlong/projs/my/boot-test/target/com.ityang.boot-1.0-SNAPSHOT.jar -> /Users/yangzhenlong/projs/my/boot-test/target/docker/com.ityang.boot-1.0-SNAPSHOT.jar
[INFO] Copying /Users/yangzhenlong/projs/my/boot-test/src/main/docker/Dockerfile -> /Users/yangzhenlong/projs/my/boot-test/target/docker/Dockerfile
[INFO] Building image dockerspringboot
Step 1/4 : FROM hub.c.163.com/dwyane/openjdk:8

 ---> 96cddf5ae9f1
Step 2/4 : VOLUME /tmp

 ---> Running in 0dab3c046923
Removing intermediate container 0dab3c046923
 ---> 2e62fad6a16a
Step 3/4 : ADD com.ityang.boot-1.0-SNAPSHOT.jar app.jar

 ---> a966ed4c8748
Step 4/4 : ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

 ---> Running in 4ec1c4990022
Removing intermediate container 4ec1c4990022
 ---> 02b677ad12e1
ProgressMessage{id=null, status=null, stream=null, error=null, progress=null, progressDetail=null}
Successfully built 02b677ad12e1
Successfully tagged dockerspringboot:latest
[INFO] Built dockerspringboot
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.475 s
[INFO] Finished at: 2018-11-17T01:24:57+08:00
[INFO] ------------------------------------------------------------------------

通過docker鏡像啓動容器

查看鏡像

$ docker images

REPOSITORY	TAG	IMAGE ID	CREATED	SIZE
dockerspringboot	latest	02b677ad12e1	8 seconds ago	657MB

啓動容器

$ docker run -p 8080:8080 -d dockerspringboot
cbc89f9e0cd584f1405d7177098423f5b576d668f7aee6ff7dfb5b4e34154862

解釋：

-p 8080:8080 #容器端口映射到宿主端口，格式爲：主機(宿主)端口:容器端口
-d #後臺運行容器，並返回容器ID

查看運行的容器

$ docker ps

CONTAINER ID	IMAGE	COMMAND	CREATED	STATUS	PORTS	NAMES
cbc89f9e0cd5	dockerspringboot	"java -Djava.securit…"	58 seconds ago	Up 58 seconds	0.0.0.0:8001->8001/tcp	frosty_lichterman

瀏覽器訪問 loalhost:8080