#405 updated Maven GPG plugin and added Nexus Staging plugin

pom.xml

@@ -140,6 +140,8 @@
         <maven.xml.version>1.0.2</maven.xml.version>
         <maven.invoker.version>3.7.0</maven.invoker.version>
         <org.asciidoctor-plugin.version>2.2.4</org.asciidoctor-plugin.version>
+        <maven-gpg-plugin.version>1.6</maven-gpg-plugin.version>
+        <nexus-staging-maven-plugin.version>1.6.13</nexus-staging-maven-plugin.version>
         <!-- Maven config -->
         <maven.min.version>3.5.0</maven.min.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -613,6 +615,16 @@
                         </formats>
                     </configuration>
                 </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-gpg-plugin</artifactId>
+                    <version>${maven-gpg-plugin.version}</version>
+                </plugin>
+                <plugin>
+                    <groupId>org.sonatype.plugins</groupId>
+                    <artifactId>nexus-staging-maven-plugin</artifactId>
+                    <version>${nexus-staging-maven-plugin.version}</version>
+                </plugin>
             </plugins>
         </pluginManagement>
 
@@ -748,7 +760,13 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-gpg-plugin</artifactId>
-                        <version>1.6</version>
+                        <configuration>
+                            <!-- Prevent `gpg` from using pinentry programs -->
+                            <gpgArguments>
+                                <arg>--pinentry-mode</arg>
+                                <arg>loopback</arg>
+                            </gpgArguments>
+                        </configuration>
                         <executions>
                             <execution>
                                 <id>sign-artifacts</id>
@@ -759,6 +777,16 @@
                             </execution>
                         </executions>
                     </plugin>
+                    <plugin>
+                        <groupId>org.sonatype.plugins</groupId>
+                        <artifactId>nexus-staging-maven-plugin</artifactId>
+                        <extensions>true</extensions>
+                        <configuration>
+                            <serverId>sonatype-nexus-staging</serverId>
+                            <nexusUrl>https://oss.sonatype.org/</nexusUrl>
+                            <autoReleaseAfterClose>true</autoReleaseAfterClose>
+                        </configuration>
+                    </plugin>
                 </plugins>
             </build>
         </profile>