test new release workflow

Author: tomix26

.github/workflows/release.yml

@@ -0,0 +1,50 @@
+name: Release
+on:
+  milestone:
+    types: [closed]
+jobs:
+  build:
+    name: Release ${{ github.event.milestone.title }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          ref: master
+          fetch-depth: 0
+      - name: Set up Git
+        run: |
+          git config user.name "Zonky Bot"
+          git config user.email "bot@zonky.com"
+      - name: Set up JDK
+        uses: actions/setup-java@v2
+        with:
+          distribution: 'zulu'
+          java-version: 8
+          server-id: ossrh
+          server-username: MAVEN_USER
+          server-password: MAVEN_PASS
+      - name: Prepare signing certificate
+        env:
+          PUB_CERT: ${{ secrets.PUB_CERT }}
+          SIGNING_CERT: ${{ secrets.SIGNING_CERT }}
+        run: |
+          mkdir $RUNNER_TEMP/.gnupg
+          echo -n $PUB_CERT | base64 --decode > $RUNNER_TEMP/.gnupg/pubring.gpg
+          echo -n $SIGNING_CERT | base64 --decode > $RUNNER_TEMP/.gnupg/secring.gpg
+      - name: Release with Maven
+        env:
+          RELEASE_VERSION: ${{ github.event.milestone.title }}
+          MAVEN_USER: ${{ secrets.MAVEN_USER }}
+          MAVEN_PASS: ${{ secrets.MAVEN_PASS }}
+          SIGNING_KEY_ID: ${{ secrets.SIGNING_KEY_ID }}
+          SIGNING_PASS: ${{ secrets.SIGNING_PASS }}
+        run: |
+          mvn -B release:prepare release:perform \
+            -DreleaseVersion=$RELEASE_VERSION \
+            -Darguments="-Dgpg.defaultKeyring=false \
+            -Dgpg.keyname=$SIGNING_KEY_ID \
+            -Dgpg.passphrase=$SIGNING_PASS \
+            -Dgpg.homedir=$RUNNER_TEMP/.gnupg"
+      - name: Clean up signing certificate
+        run: rm -rf $RUNNER_TEMP/.gnupg