Fix the pipeline script

Jenkinsfile

@@ -3,24 +3,42 @@ pipeline {
         label "golang"
     }
 
+    environment {
+        IMAGE_TAG = ""
+    }
+
     stages{
         stage("build") {
             steps {
-                sh 'make build'
+                container('golang'){
+                    sh '''
+                    CGO_ENABLED=0 GOOS=linux go build -ldflags "-w -s" -a -installsuffix cgo -o bin/wechat-backend
+                    upx bin/wechat-backend
+                    '''
+                }
             }
         }
 
         stage("image") {
             steps {
-                sh 'make image'
+                container('golang'){
+                    sh '''
+                    IMAGE_TAG=$(git rev-parse --short HEAD)
+                    docker build -t surenpi/jenkins-wechat:$IMAGE_TAG .
+                    docker push surenpi/jenkins-wechat:$IMAGE_TAG
+                    '''
+                }
             }
         }
 
         stage("push-image") {
+            environment {
+                DOCKER_CREDS = credentials('docker-surenpi')
+            }
             steps {
-                withCredentials([usernamePassword(credentialsId: '', passwordVariable: 'passwd', usernameVariable: 'user')]) {
+                container('golang') {
                     sh '''
-                    docker login -u $user -p $passwd
+                    docker login -u $DOCKER_CREDS_USR -p $DOCKER_CREDS_PSW
                     make push-image
                     docker logout
                     '''