For #1346: added gpg config to pom.xml

pom.xml

@@ -332,5 +332,36 @@ The MIT License (MIT)
         </plugins>
       </build>
     </profile>
+    <profile>
+      <id>jcabi-gpg</id>
+      <activation>
+        <property>
+          <name>gpg.keyname</name>
+        </property>
+      </activation>
+      <build>
+        <plugins>
+          <plugin>
+            <artifactId>maven-gpg-plugin</artifactId>
+            <version>1.6</version>
+            <executions>
+              <execution>
+                <id>jcabi-sign-artifacts</id>
+                <phase>verify</phase>
+                <goals>
+                  <goal>sign</goal>
+                </goals>
+                <configuration combine.self="override">
+                  <gpgArguments>
+                    <arg>--pinentry-mode</arg>
+                    <arg>loopback</arg>
+                  </gpgArguments>
+                </configuration>
+              </execution>
+            </executions>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
   </profiles>
 </project>