GitHub Action For Maven Central Deploy

.github_workflows_deploy.yaml

jobs:
  deploy:
    name: Maven Deploy
    runs-on: ubuntu-latest
  
    steps:
    - name: Checkout Source
      uses: actions/checkout@v2

    - name: Use Java 11
      uses: actions/setup-java@v1
      with:
        java-version: 11
        server-id: ossrh
        server-username: SONATYPE_USER
        server-password: SONATYPE_PASSWORD
        gpg-private-key: ${{ secrets.GPG_SECRET_KEY }}
        gpg-passphrase: GPG_PASSPHRASE

    - name: Maven Package Source and JavaDoc Jars Signed
      env:
        GPG_PASSPHRASE: ${{secrets.GPG_PASSPHRASE}}
        SONATYPE_USER: ${{ secrets.SONATYPE_USER }}
        SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}
      run: mvn -ntp -T 1C package source:jar-no-fork javadoc:jar gpg:sign deploy

partial-pom.xml

  ...
  <build>
    <plugins>
      <plugin>
        <artifactId>maven-enforcer-plugin</artifactId>
        <version>3.0.0-M3</version>
        <executions>
          <execution><goals><goal>enforce</goal></goals></execution>
        </executions>
        <configuration>
          <rules>
            <requireMavenVersion><version>3.6.3</version></requireMavenVersion>
          </rules>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-source-plugin</artifactId>
        <version>3.2.0</version>
      </plugin>
      <plugin>
        <artifactId>maven-javadoc-plugin</artifactId>
        <version>3.2.0</version>
        <configuration>
          <quiet>true</quiet>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-gpg-plugin</artifactId>
        <version>1.6</version>
        <configuration>
          <gpgArguments><arg>--batch</arg><arg>--pinentry-mode</arg><arg>loopback</arg></gpgArguments>
          <passphrase>${env.GPG_PASSPHRASE}</passphrase>
          <interactive>false</interactive>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.sonatype.plugins</groupId>
        <artifactId>nexus-staging-maven-plugin</artifactId>
        <version>1.6.7</version>
        <extensions>true</extensions>
        <configuration>
          <serverId>ossrh</serverId>
          <nexusUrl>https://oss.sonatype.org/</nexusUrl>
          <autoReleaseAfterClose>false</autoReleaseAfterClose>
        </configuration>
      </plugin>
    </plugins>
  </build>