add a Jenkinsfile to trigger website build
diff --git a/Jenkinsfile b/Jenkinsfile
new file mode 100644
index 0000000..abfa9e3
--- /dev/null
+++ b/Jenkinsfile
@@ -0,0 +1,18 @@
+pipeline {
+    agent {
+        label 'git-websites'
+    }
+
+    stages {
+        stage('trigger-site-build') {
+            when {
+                branch 'master'
+                changeset '**/*'
+            }
+
+            steps {
+                build job: 'Aries/aries-website', wait: false
+            }
+        }
+    }
+}
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