GitHub Action: Setup ssh properly

Author: oleg-nenashev

.github/workflows/release.yml

@@ -27,6 +27,15 @@ jobs:
       - name: Setup Git user
         uses: fregante/setup-git-user@v2 
 
+      -   name: Setup SSH Keys and known_hosts
+          env:
+              SSH_AUTH_SOCK: /tmp/ssh_agent.sock
+          run: |
+              mkdir -p ~/.ssh
+              ssh-keyscan github.com >> ~/.ssh/known_hosts
+              ssh-agent -a $SSH_AUTH_SOCK > /dev/null
+              ssh-add - <<< "${{ secrets.SSH_PRIVATE_KEY }}"
+        
       - name: Publish to GitHub Packages
         run: mvn -ntp -B release:prepare release:perform
         env: