Release repository and profile to sign artifacts

pom.xml

@@ -81,6 +81,12 @@
   </build>
 
   <distributionManagement>
+    <repository>
+      <id>gate-oss</id>
+      <name>Sonatype OSS staging</name>
+      <url>https://oss.sonatype.org/service/local/staging/deploy/maven2</url>
+      <layout>default</layout>
+    </repository>
     <snapshotRepository>
       <id>gate.snapshots</id>
       <name>GATE Snapshots Repository</name>
@@ -89,4 +95,27 @@
     </snapshotRepository>
   </distributionManagement>
 
+  <profiles>
+    <profile>
+      <id>gpg-sign</id>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-gpg-plugin</artifactId>
+            <version>1.6</version>
+            <executions>
+              <execution>
+                <id>sign-artifacts</id>
+                <phase>verify</phase>
+                <goals>
+                  <goal>sign</goal>
+                </goals>
+              </execution>
+            </executions>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
 </project>