Add plaintext plugin and output the build number.

pom.xml

@@ -411,6 +411,32 @@
 							</execution>
 						</executions>
 					</plugin>
+					<plugin>
+						<groupId>io.github.olivierlemasle.maven</groupId>
+						<artifactId>plaintext-maven-plugin</artifactId>
+						<version>1.0.0</version>
+						<configuration>
+							<outputDirectory>${env.M2_HOME}/build_commits.txt</outputDirectory>
+							<files>
+								<file>
+									<name>versions</name>
+									<append>true</append>
+									<lines>
+										<line>${project.scm.url} ${project.version} ${buildNumber}</line>
+									</lines>
+								</file>
+							</files>
+						</configuration>
+						<executions>
+							<execution>
+								<id>generate-file</id>
+								<phase>package</phase>
+								<goals>
+									<goal>write</goal>
+								</goals>
+							</execution>
+						</executions>
+					</plugin>
 				</plugins>
 				<finalName>${project.artifactId}-${project.version}</finalName>
 			</build>