Add a Dockefile and configure the docker-maven-plugin

pom.xml

@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.springframework.samples</groupId>
     <artifactId>springboot-petclinic</artifactId>
-    <version>1.4.0-SNAPSHOT</version>
+    <version>1.4.0</version>
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
@@ -19,6 +19,7 @@
         <java.version>1.7</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <docker.image.prefix>arey</docker.image.prefix>
 
         <!-- Dates -->
         <jodatime-hibernate.version>1.3</jodatime-hibernate.version>
@@ -313,6 +314,28 @@
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+                <groupId>com.spotify</groupId>
+                <artifactId>docker-maven-plugin</artifactId>
+                <version>0.4.11</version>
+                <configuration>
+                    <imageName>${docker.image.prefix}/${project.artifactId}</imageName>
+                    <dockerDirectory>src/main/docker</dockerDirectory>
+                    <resources>
+                        <resource>
+                            <targetPath>/</targetPath>
+                            <directory>${project.build.directory}</directory>
+                            <include>${project.build.finalName}.war</include>
+                        </resource>
+                    </resources>
+                    <forceTags>true</forceTags>
+                    <imageTags>
+                        <imageTag>${project.version}</imageTag>
+                        <imageTag>latest</imageTag>
+                    </imageTags>
+                    <useConfigFile>true</useConfigFile>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
     <reporting>

src/main/docker/Dockerfile

+FROM openjdk:alpine
+MAINTAINER Antoine Rey <antoine.rey@free.fr>
+# Spring Boot application creates working directories for Tomcat by default
+VOLUME /tmp
+ADD petclinic.war petclinic.war
+RUN sh -c 'touch /petclinic.war'
+# To reduce Tomcat startup time we added a system property pointing to "/dev/urandom" as a source of entropy.
+ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/petclinic.war"]