fix: wait gitea to be online before post request

Jenkinsfile

@@ -43,6 +43,19 @@ pipeline {
     post {
         always {
             script {
+                echo "Waiting for Gitea to be online..."
+                
+                // Try to reac gitea API for 12 tries of 10s (2 minutes)
+                timeout(time: 2, unit: 'MINUTES') {
+                    waitUntil {
+                        def status = sh(
+                            script: "curl -s -o /dev/null -w '%{http_code}' ${GITEA_API_URL}/version || true",
+                            returnStdout: true
+                        ).trim()
+                        return (status == '200')
+                    }
+                }
+                
                 echo "Send Gitea check..."
                 // Get and store SHA
                 def commitSha = sh(script: 'git rev-parse HEAD', returnStdout: true).trim()