Docker images (#527)

with this change we're adding generation of 2 docker images - verifier and stub runner
we also added a project `spring-cloud-contract-stub-runner-boot` which contains a far jar with stub runner boot

fixes gh-526, gh-516

docker/spring-cloud-contract-stub-runner-docker/pom.xml

@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<parent>
+		<groupId>org.springframework.cloud</groupId>
+		<artifactId>spring-cloud-contract-docker-parent</artifactId>
+		<version>1.2.3.BUILD-SNAPSHOT</version>
+		<relativePath>..</relativePath>
+	</parent>
+
+	<artifactId>spring-cloud-contract-stub-runner-docker</artifactId>
+	<packaging>pom</packaging>
+	<version>1.2.3.BUILD-SNAPSHOT</version>
+	<name>Spring Cloud Contract Stub Runner Docker</name>
+	<description>Spring Cloud Contract Stub Runner Docker</description>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-contract-stub-runner-boot</artifactId>
+			<scope>compile</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+			  <groupId>org.apache.maven.plugins</groupId>
+			  <artifactId>maven-dependency-plugin</artifactId>
+			  <version>3.0.0</version>
+			  <executions>
+			    <execution>
+			      <id>copy-dependencies</id>
+			      <phase>package</phase>
+			      <goals>
+			        <goal>copy</goal>
+			      </goals>
+			      <configuration>
+							<artifactItems>
+                <artifactItem>
+									<groupId>${project.groupId}</groupId>
+									<artifactId>spring-cloud-contract-stub-runner-boot</artifactId>
+                  <version>${project.version}</version>
+                  <type>jar</type>
+                  <overWrite>true</overWrite>
+                  <outputDirectory>${project.build.directory}/libs</outputDirectory>
+                  <destFileName>stub-runner-boot.jar</destFileName>
+                </artifactItem>
+              </artifactItems>
+			      </configuration>
+			    </execution>
+			  </executions>
+			</plugin>
+			<plugin>
+				<groupId>com.spotify</groupId>
+			  <artifactId>dockerfile-maven-plugin</artifactId>
+			  <version>1.3.7</version>
+			  <executions>
+			    <execution>
+			      <id>default</id>
+			      <goals>
+			        <goal>build</goal>
+			        <goal>push</goal>
+			      </goals>
+			    </execution>
+			  </executions>
+			  <configuration>
+			    <repository>${docker.registry.organization}/spring-cloud-contract-stub-runner</repository>
+			    <tag>${project.version}</tag>
+	        <username>${env.DOCKER_HUB_USERNAME}</username>
+	        <password>${env.DOCKER_HUB_PASSWORD}</password>
+			  </configuration>
+			</plugin>
+		</plugins>
+	</build>
+</project>