Docker를 이용한 spring-boot 어플리케이션 만들기

원문

• mac os에서 docker daemon을 실행
• maven build plugins에 아래 plugin을 추가

<plugin>
        <artifactId>maven-resources-plugin</artifactId>
        <executions>
            <execution>
                <id>copy-resources</id>
                <phase>validate</phase>
                <goals>
                    <goal>copy-resources</goal>
                </goals>
                <configuration>
                    <outputDirectory>${basedir}/target/</outputDirectory>
                    <resources>
                        <resource>
                            <directory>.docker</directory>
                            <filtering>true</filtering>
                        </resource>
                    </resources>
                </configuration>
            </execution>
        </executions>
    </plugin>

• Controller 구현
• 아래와 같이 $PROJECT_ROOT/.docker/Dockerfile 을 생성

FROM williamyeh/java8
ADD docker-demo-0.0.1-SNAPSHOT.jar /opt/docker-demo/
EXPOSE 8080
WORKDIR /opt/docker-demo/
CMD ["java", "-jar", "docker-demo-0.0.1-SNAPSHOT.jar"]

• build

mvn clean install
cd target
docker build -t docker-demo .

• Check Image Id with docker images

~/Downloads/docker-demo/target (master●)$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
docker-demo         latest              fa859c4a9247        9 minutes ago       611MB
ubuntu              latest              452a96d81c30        12 days ago         79.6MB
williamyeh/java8    latest              00bc163fa009        6 weeks ago         593MB

• run

docker run -p 8080:8080 <image id>

앞의 port가 사용할 port, 뒤는 docker container가 expose한 포트