diff --git a/builder/alicloud/ecs/artifact.go b/builder/alicloud/ecs/artifact.go
index 7e7b258d5..f22735e3f 100644
--- a/builder/alicloud/ecs/artifact.go
+++ b/builder/alicloud/ecs/artifact.go
@@ -2,12 +2,13 @@ package ecs
 
 import (
 	"fmt"
-	"github.com/denverdino/aliyungo/common"
-	"github.com/denverdino/aliyungo/ecs"
-	"github.com/hashicorp/packer/packer"
 	"log"
 	"sort"
 	"strings"
+
+	"github.com/denverdino/aliyungo/common"
+	"github.com/denverdino/aliyungo/ecs"
+	"github.com/hashicorp/packer/packer"
 )
 
 type Artifact struct {
diff --git a/builder/alicloud/ecs/builder_acc_test.go b/builder/alicloud/ecs/builder_acc_test.go
index 33e0acc15..415bfcf8b 100644
--- a/builder/alicloud/ecs/builder_acc_test.go
+++ b/builder/alicloud/ecs/builder_acc_test.go
@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"fmt"
+
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
 	builderT "github.com/hashicorp/packer/helper/builder/testing"
diff --git a/builder/alicloud/ecs/image_config.go b/builder/alicloud/ecs/image_config.go
index f4efe4d9a..cbf1f3f91 100644
--- a/builder/alicloud/ecs/image_config.go
+++ b/builder/alicloud/ecs/image_config.go
@@ -2,6 +2,7 @@ package ecs
 
 import (
 	"fmt"
+
 	"github.com/denverdino/aliyungo/common"
 	"github.com/hashicorp/packer/template/interpolate"
 )
diff --git a/builder/alicloud/ecs/image_config_test.go b/builder/alicloud/ecs/image_config_test.go
index 983d569d1..bb4581871 100644
--- a/builder/alicloud/ecs/image_config_test.go
+++ b/builder/alicloud/ecs/image_config_test.go
@@ -1,8 +1,9 @@
 package ecs
 
 import (
-	"github.com/denverdino/aliyungo/common"
 	"testing"
+
+	"github.com/denverdino/aliyungo/common"
 )
 
 func testAlicloudImageConfig() *AlicloudImageConfig {
diff --git a/builder/alicloud/ecs/packer_helper.go b/builder/alicloud/ecs/packer_helper.go
index e08ceba9b..f88f6ff1a 100644
--- a/builder/alicloud/ecs/packer_helper.go
+++ b/builder/alicloud/ecs/packer_helper.go
@@ -2,6 +2,7 @@ package ecs
 
 import (
 	"fmt"
+
 	"github.com/hashicorp/packer/packer"
 	"github.com/mitchellh/multistep"
 )
diff --git a/builder/alicloud/ecs/run_config.go b/builder/alicloud/ecs/run_config.go
index 32e3173e5..1fc0397bc 100644
--- a/builder/alicloud/ecs/run_config.go
+++ b/builder/alicloud/ecs/run_config.go
@@ -3,10 +3,11 @@ package ecs
 import (
 	"errors"
 	"fmt"
+	"os"
+
 	"github.com/hashicorp/packer/common/uuid"
 	"github.com/hashicorp/packer/helper/communicator"
 	"github.com/hashicorp/packer/template/interpolate"
-	"os"
 )
 
 type RunConfig struct {
diff --git a/builder/alicloud/ecs/ssh_helper.go b/builder/alicloud/ecs/ssh_helper.go
index 281dd6544..d3d6b8b1c 100644
--- a/builder/alicloud/ecs/ssh_helper.go
+++ b/builder/alicloud/ecs/ssh_helper.go
@@ -2,13 +2,14 @@ package ecs
 
 import (
 	"fmt"
+	"net"
+	"os"
+	"time"
+
 	packerssh "github.com/hashicorp/packer/communicator/ssh"
 	"github.com/mitchellh/multistep"
 	"golang.org/x/crypto/ssh"
 	"golang.org/x/crypto/ssh/agent"
-	"net"
-	"os"
-	"time"
 )
 
 var (
diff --git a/builder/alicloud/ecs/step_check_source_image.go b/builder/alicloud/ecs/step_check_source_image.go
index 7d69470f5..4990f99d5 100644
--- a/builder/alicloud/ecs/step_check_source_image.go
+++ b/builder/alicloud/ecs/step_check_source_image.go
@@ -2,6 +2,7 @@ package ecs
 
 import (
 	"fmt"
+
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
 	"github.com/hashicorp/packer/packer"
diff --git a/builder/alicloud/ecs/step_config_key_pair.go b/builder/alicloud/ecs/step_config_key_pair.go
index dca2e0866..6e1276dcc 100644
--- a/builder/alicloud/ecs/step_config_key_pair.go
+++ b/builder/alicloud/ecs/step_config_key_pair.go
@@ -2,13 +2,14 @@ package ecs
 
 import (
 	"fmt"
+	"io/ioutil"
+	"os"
+	"runtime"
+
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
 	"github.com/hashicorp/packer/packer"
 	"github.com/mitchellh/multistep"
-	"io/ioutil"
-	"os"
-	"runtime"
 )
 
 type StepConfigAlicloudKeyPair struct {
diff --git a/builder/alicloud/ecs/step_pre_validate.go b/builder/alicloud/ecs/step_pre_validate.go
index 9917f4b23..12d8e098f 100644
--- a/builder/alicloud/ecs/step_pre_validate.go
+++ b/builder/alicloud/ecs/step_pre_validate.go
@@ -2,6 +2,7 @@ package ecs
 
 import (
 	"fmt"
+
 	"github.com/denverdino/aliyungo/common"
 	"github.com/denverdino/aliyungo/ecs"
 	"github.com/hashicorp/packer/packer"
diff --git a/builder/alicloud/ecs/step_stop_instance.go b/builder/alicloud/ecs/step_stop_instance.go
index a72748bdf..b12a74c63 100644
--- a/builder/alicloud/ecs/step_stop_instance.go
+++ b/builder/alicloud/ecs/step_stop_instance.go
@@ -2,6 +2,7 @@ package ecs
 
 import (
 	"fmt"
+
 	"github.com/denverdino/aliyungo/ecs"
 	"github.com/hashicorp/packer/packer"
 	"github.com/mitchellh/multistep"