remove -SNAPSHOT for 0.0.1 release, add maven-gpg-plugin

add scm url, which is need to publish

pom.xml

@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.dataverse.test</groupId>
   <artifactId>hello</artifactId>
-  <version>0.0.1-SNAPSHOT</version>
+  <version>0.0.1</version>
   <name>hello</name>
   <description>A hello world app for testing.</description>
   <url>https://github.com/gdcc/hello</url>
@@ -24,6 +24,7 @@
   </developers>
   <scm>
     <developerConnection>scm:git:[email protected]:gdcc/hello.git</developerConnection>
+    <url>https://github.com/gdcc/hello</url>
   </scm>
   <distributionManagement>
     <repository>
@@ -42,6 +43,7 @@
     <nexus-staging-plugin.version>1.6.13</nexus-staging-plugin.version>
     <pomchecker-maven-plugin.version>1.7.0</pomchecker-maven-plugin.version>
     <spotless.version>2.43.0</spotless.version>
+    <javadoc.lint>none</javadoc.lint>
   </properties>
   <dependencies>
     <dependency>
@@ -120,4 +122,55 @@
       </plugin>
     </plugins>
   </build>
+  <profiles>
+    <profile>
+      <id>release</id>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-gpg-plugin</artifactId>
+            <executions>
+              <execution>
+                <id>sign-artifacts</id>
+                <goals>
+                  <goal>sign</goal>
+                </goals>
+                <phase>verify</phase>
+              </execution>
+            </executions>
+          </plugin>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-javadoc-plugin</artifactId>
+            <configuration>
+              <source>${jdk.version}</source>
+              <detectJavaApiLink>false</detectJavaApiLink>
+              <doclint>${javadoc.lint}</doclint>
+            </configuration>
+            <executions>
+              <execution>
+                <id>attach-javadocs</id>
+                <goals>
+                  <goal>jar</goal>
+                </goals>
+              </execution>
+            </executions>
+          </plugin>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-source-plugin</artifactId>
+            <executions>
+              <execution>
+                <id>attach-sources</id>
+                <goals>
+                  <goal>jar</goal>
+                </goals>
+              </execution>
+            </executions>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
 </project>