There may be many ways.. But I implemented by following two ways
Given example is of maven project.
1. Using Dockerfile in maven project
Use the following file structure:
Demo
+-- src
| +-- main
| ¦ +-- java
| ¦ +-- org
| ¦ +-- demo
| ¦ +-- Application.java
| ¦
| +-- test
|
+---- Dockerfile
+---- pom.xml
And update the Dockerfile as:
FROM java:8
EXPOSE 8080
ADD /target/demo.jar demo.jar
ENTRYPOINT ["java","-jar","demo.jar"]
Navigate to the project folder and type following command you will be ab le to create image and run that image:
$ mvn clean
$ mvn install
$ docker build -f Dockerfile -t springdemo .
$ docker run -p 8080:8080 -t springdemo
Get video at Spring Boot with Docker
2. Using Maven plugins
Add given maven plugin in pom.xml
<plugin>
<groupId>com.spotify</groupId>
<artifactId>docker-maven-plugin</artifactId>
<version>0.4.5</version>
<configuration>
<imageName>springdocker</imageName>
<baseImage>java</baseImage>
<entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
<resources>
<resource>
<targetPath>/</targetPath>
<directory>${project.build.directory}</directory>
<include>${project.build.finalName}.jar</include>
</resource>
</resources>
</configuration>
</plugin>
Navigate to the project folder and type following command you will be able to create image and run that image:
$ mvn clean package docker:build
$ docker images
$ docker run -p 8080:8080 -t <image name>
In first example we are creating Dockerfile and providing base image and adding jar an so, after doing that we will run docker command to build an image with specific name and then run that image..
Whereas in second example we are using maven plugin in which we providing baseImage and imageName so we don't need to create Dockerfile here.. after packaging maven project we will get the docker image and we just need to run that image..