diff --git a/config.example.yml b/config.example.yml
index d7403e6..4d19ee3 100644
--- a/config.example.yml
+++ b/config.example.yml
@@ -12,3 +12,4 @@ redis:
   port: 6379
 system:
   verify: false
+  mount_dir: /path/to/mount
diff --git a/services/config/config.go b/services/config/config.go
index eb63ce5..2d722f6 100644
--- a/services/config/config.go
+++ b/services/config/config.go
@@ -41,8 +41,9 @@ type logStruct struct {
 }
 
 type systemStruct struct {
-	Salt   string `yaml:"salt,omitempty"`
-	Verify bool   `yaml:"verify,omitempty"`
+	Salt     string `yaml:"salt,omitempty"`
+	Verify   bool   `yaml:"verify,omitempty"`
+	MountDir string `yaml:"mount_dir,omitempty"`
 }
 
 var config = configStruct{
diff --git a/services/config/exporter.go b/services/config/exporter.go
index f25337f..2c7f5e1 100644
--- a/services/config/exporter.go
+++ b/services/config/exporter.go
@@ -53,6 +53,10 @@ func GetSystemVerify() bool {
 	return config.GetSystemVerify()
 }
 
+func GetSystemMountDir() string {
+	return config.GetSystemMountDir()
+}
+
 func Save() error {
 	return config.Save()
 }
diff --git a/services/config/internal.go b/services/config/internal.go
index 29fa092..256944c 100644
--- a/services/config/internal.go
+++ b/services/config/internal.go
@@ -40,6 +40,10 @@ func (c *configStruct) GetSystemVerify() bool {
 	return c.System.Verify
 }
 
+func (c *configStruct) GetSystemMountDir() string {
+	return c.System.MountDir
+}
+
 func (c *configStruct) Save() error {
 	return c.save()
 }
diff --git a/services/instanceController/createInstance.go b/services/instanceController/createInstance.go
index 88e55c3..09b41d0 100644
--- a/services/instanceController/createInstance.go
+++ b/services/instanceController/createInstance.go
@@ -6,6 +6,7 @@ import (
 	"errors"
 	"megrez/libs/crypto"
 	"megrez/libs/request"
+	"megrez/services/config"
 	"strconv"
 )
 
@@ -56,13 +57,16 @@ func createInstance(ip string, port int, apikey string,
 				Src:  volumeName,
 				Dest: "/root/megrez-tmp",
 			},
-			{
-				Src:  "/data/pub",
-				Dest: "/root/megrez-pub",
-			},
 		}
 	}
 
+	if config.GetSystemMountDir() != "" {
+		data.Binds = append(data.Binds, bindStruct{
+			Src:  config.GetSystemMountDir(),
+			Dest: "/root/megrez",
+		})
+	}
+
 	reqBytes, err := json.Marshal(data)
 	if err != nil {
 		l.Error("marshal request data error: %v", err)