Dockerfile maven - Parameterize microservice's JAR file name. Upgrade Spotify Dockerfile's maven plugin version

.travis.yml

@@ -24,6 +24,6 @@ env:
   - TMX_DOCKER_IMAGE=johncarnell/tmx-simple-service:chapter1
 script:
 - docker login -u $DOCKER_USERNAME -p $DOCKER_PASSWORD
-- mvn clean package docker:build
+- mvn clean package
 - docker push $TMX_DOCKER_IMAGE
 - ecs-cli --version

README.md

@@ -11,7 +11,7 @@ To build the code examples for Chapter 1 as a docker image, open a command-line
 
 Run the following maven command.  This command will execute the [Spotify docker plugin](https://github.com/spotify/docker-maven-plugin) defined in the pom.xml file.  
 
-   **mvn clean package docker:build**
+   **mvn clean package**
 
 If everything builds successfully you should see a message indicating that the build was successful.
 

simpleservice/Dockerfile

@@ -2,7 +2,8 @@ FROM openjdk:8-jdk-alpine
 RUN  apk update && apk upgrade && apk add netcat-openbsd
 RUN mkdir -p /usr/local/simple-service
 
-ADD target/simple-service-0.0.1-SNAPSHOT.jar /usr/local/simple-service
+ARG JAR_FILE
+ADD target/${JAR_FILE} /usr/local/simple-service
 ADD src/main/docker/run.sh run.sh
 RUN chmod +x run.sh
 CMD ./run.sh

simpleservice/pom.xml

@@ -42,7 +42,7 @@
       <plugin>
         <groupId>com.spotify</groupId>
         <artifactId>dockerfile-maven-plugin</artifactId>
-        <version>1.3.4</version>
+        <version>1.3.7</version>
         <executions>
           <execution>
             <id>default</id>
@@ -59,6 +59,9 @@
             <configuration>
               <repository>${docker.image.name}</repository>
               <tag>${docker.image.tag}</tag>
+              <buildArgs>
+                <JAR_FILE>${project.build.finalName}.jar</JAR_FILE>
+              </buildArgs>              
             </configuration>
           </execution>
         </executions>