# First stage:  **build environment**
FROM maven:3.5.0-jdk-8-alpine **AS builder**

# add pom.xml and source code
ADD ./pom.xml pom.xml
ADD ./src src/

# package jar
RUN mvn clean package

# Second **stage: minimal runtime environment**
From openjdk:8-jre-alpine

# copy jar from the first stage
COPY **--from=builder** target/my-app-1.0-SNAPSHOT.jar my-app-1.0-SNAPSHOT.jar

EXPOSE 8080

CMD ["java", "-jar", "my-app-1.0-SNAPSHOT.jar"]

 new DockerFileBuilder()
        .basedir("/")
        .baseImage("**maven:3.5.0-jdk-8-alpine** ### **AS** **builder**")
        .expose(Collections.singletonList("8080"))
			/////
			/////
        .entryPoint(a)
        
        
        .write(javaProject.getWorkDir().toFile());