Configure Maven Central snapshot publishing (#20)

Author: pivovarit

.github/workflows/build.yml

@@ -18,7 +18,6 @@ jobs:
     name: Build with JDK ${{ matrix.java }} on ${{ matrix.architecture }}
     steps:
       - uses: actions/checkout@v4
-
       - name: Setup JDK
         uses: actions/setup-java@v4
         with:
@@ -29,3 +28,28 @@ jobs:
 
       - name: Build with Maven
         run: mvn test
+
+  deploy-snapshot:
+    runs-on: ubuntu-latest
+    needs: build
+    if: github.ref == 'refs/heads/main'
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+          cache: 'maven'
+          server-id: central
+          server-username: CENTRAL_USERNAME
+          server-password: CENTRAL_PASSWORD
+          gpg-private-key: ${{ secrets.MAVEN_GPG_PRIVATE_KEY }}
+
+      - name: Deploy Snapshot
+        run: mvn -B --no-transfer-progress -Psonatype-oss-release -Prelease-sign-artifacts -DskipTests=true deploy
+        env:
+          CENTRAL_USERNAME: ${{ secrets.CENTRAL_USERNAME }}
+          CENTRAL_PASSWORD: ${{ secrets.CENTRAL_PASSWORD }}
+          MAVEN_GPG_PASSPHRASE: ${{ secrets.MAVEN_GPG_PASSPHRASE }}

pom.xml

@@ -185,6 +185,16 @@
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+                <groupId>org.sonatype.central</groupId>
+                <artifactId>central-publishing-maven-plugin</artifactId>
+                <version>0.7.0</version>
+                <extensions>true</extensions>
+                <configuration>
+                    <publishingServerId>central</publishingServerId>
+                    <centralSnapshotsUrl>https://central.sonatype.com/repository/maven-snapshots/</centralSnapshotsUrl>
+                </configuration>
+            </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>