Add Jenkinsfile and modify script

Jenkinsfile

@@ -0,0 +1,29 @@
+#!/usr/bin/groovy
+directory = "openwrt-camera-image"
+pipeline {
+    agent any
+    stages {
+        stage("Setup") {
+            steps {
+                dir(directory) {
+                    deleteDir()
+                    checkout scm
+                }
+            }
+        }
+        stage("Build") {
+            steps {
+                dir(directory) {
+                    sh "sh script.sh"
+                }
+            }
+        }
+        stage("Deliver") {
+            steps {
+                dir(directory) {
+                    archiveArtifacts artifacts: "bin/*", allowEmptyArchive: false, fingerprint: false
+                }
+            }
+        }
+    }
+}