add maven-central-publish-workflow

Author: infeo

.github/workflows/publish-central.yml

@@ -0,0 +1,37 @@
+name: Publish to Maven Central
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Tag'
+        required: true
+        default: '0.0.0'
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: "refs/tags/${{ github.event.inputs.tag }}"
+      - uses: actions/setup-java@v1
+        with:
+          java-version: 11
+          server-id: ossrh # Value of the distributionManagement/repository/id field of the pom.xml
+          server-username: MAVEN_USERNAME # env variable for username in deploy
+          server-password: MAVEN_PASSWORD # env variable for token in deploy
+          gpg-private-key: ${{ secrets.RELEASES_GPG_PRIVATE_KEY }} # Value of the GPG private key to import
+          gpg-passphrase: MAVEN_GPG_PASSPHRASE # env variable for GPG private key passphrase
+      - uses: actions/cache@v2
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-maven-
+      - name: Enforce project version ${{ github.event.inputs.tag }}
+        run: mvn versions:set -B -DnewVersion=${{ github.event.inputs.tag }}
+      - name: Deploy
+        run: mvn deploy -B -DskipTests -Psign,deploy-central --no-transfer-progress
+        env:
+          MAVEN_USERNAME: ${{ secrets.OSSRH_USERNAME }}
+          MAVEN_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
+          MAVEN_GPG_PASSPHRASE: ${{ secrets.RELEASES_GPG_PASSPHRASE }}