Set up release to Maven Central

pom.xml

@@ -10,6 +10,22 @@
     <description>A Java client library for TensorFlow Serving</description>
     <url>https://github.com/tadayosi/tensorflow-serving-client-java</url>
 
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+            <distribution>repo</distribution>
+        </license>
+    </licenses>
+
+    <developers>
+        <developer>
+            <name>Tadayoshi Sato</name>
+            <email>[email protected]</email>
+            <url>https://github.com/tadayosi</url>
+        </developer>
+    </developers>
+
     <scm>
         <connection>scm:git:[email protected]:tadayosi/tensorflow-serving-client-java.git</connection>
         <developerConnection>scm:git:[email protected]:tadayosi/tensorflow-serving-client-java.git</developerConnection>
@@ -32,8 +48,12 @@
         <testcontainers-version>1.20.4</testcontainers-version>
 
         <build-helper-maven-plugin-version>3.6.0</build-helper-maven-plugin-version>
+        <central-publishing-maven-plugin-version>0.6.0</central-publishing-maven-plugin-version>
         <maven-failsafe-plugin-version>3.5.0</maven-failsafe-plugin-version>
+        <maven-gpg-plugin-version>3.2.7</maven-gpg-plugin-version>
+        <maven-javadoc-plugin-version>3.11.2</maven-javadoc-plugin-version>
         <maven-release-plugin-version>3.1.1</maven-release-plugin-version>
+        <maven-source-plugin-version>3.3.1</maven-source-plugin-version>
         <maven-surefire-plugin-version>3.5.2</maven-surefire-plugin-version>
         <protobuf-maven-plugin-version>2.7.0</protobuf-maven-plugin-version>
     </properties>
@@ -163,4 +183,66 @@
             </plugin>
         </plugins>
     </build>
+
+    <profiles>
+        <profile>
+            <id>release</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-source-plugin</artifactId>
+                        <version>${maven-source-plugin-version}</version>
+                        <executions>
+                            <execution>
+                                <id>attach-sources</id>
+                                <goals>
+                                    <goal>jar-no-fork</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-javadoc-plugin</artifactId>
+                        <version>${maven-javadoc-plugin-version}</version>
+                        <executions>
+                            <execution>
+                                <id>attach-javadocs</id>
+                                <goals>
+                                    <goal>jar</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-gpg-plugin</artifactId>
+                        <version>${maven-gpg-plugin-version}</version>
+                        <executions>
+                            <execution>
+                                <id>sign-artifacts</id>
+                                <phase>verify</phase>
+                                <goals>
+                                    <goal>sign</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+
+                    <!-- Sonatype Central -->
+                    <plugin>
+                        <groupId>org.sonatype.central</groupId>
+                        <artifactId>central-publishing-maven-plugin</artifactId>
+                        <version>${central-publishing-maven-plugin-version}</version>
+                        <extensions>true</extensions>
+                        <configuration>
+                            <publishingServerId>central</publishingServerId>
+                            <autoPublish>true</autoPublish>
+                        </configuration>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
 </project>