yet another sign plugin fix

Author: baev

.github/workflows/publish.yml

@@ -23,6 +23,13 @@ jobs:
         with:
           servers: '[{"id": "ossrh", "username": "${{secrets.OSSRH_USERNAME}}", "password": "${{secrets.OSSRH_PASSWORD}}"}]'
 
+      - name: Set up GPG
+        run: |
+          export GPG_TTY=$(tty)
+          echo -n "${GPG_PRIVATE_KEY}" | base64 --decode | gpg --batch --import
+        env:
+          GPG_PRIVATE_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
+
       - name: "Maven Build"
         run: ./mvnw -Dinvoker.skip=true install
 
@@ -33,7 +40,6 @@ jobs:
         env:
           GPG_KEY_ID: ${{ secrets.GPG_KEY_ID }}
           MAVEN_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
-          MAVEN_GPG_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
 
       - name: "Sonatype Release"
         uses: fjogeleit/http-request-action@v1