fix: Add volumes field to MCPConfig for proper volume mounting

- Added volumes field to MCPConfig struct in both backend and frontend
- Updated buildDockerCommand to handle general volume mappings
- Fixed catalog predefined configs to use volumes field

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: anubissbe

backend/mcp/catalog.go

@@ -269,6 +269,9 @@ func GetPredefinedConfig(fullName string) (*MCPConfig, error) {
 			Env: map[string]string{
 				"MCP_PORT": "9000",
 			},
+			Volumes: map[string]string{
+				"/home": "/workspace",
+			},
 			Filesystem: &FilesystemConfig{
 				RootPath: "/home",
 				ReadOnly: false,
@@ -282,6 +285,9 @@ func GetPredefinedConfig(fullName string) (*MCPConfig, error) {
 				"MCP_PORT": "9000",
 				"DOCKER_HOST": "unix:///var/run/docker.sock",
 			},
+			Volumes: map[string]string{
+				"/var/run/docker.sock": "/var/run/docker.sock",
+			},
 			Docker: &DockerConfig{
 				SocketPath: "/var/run/docker.sock",
 				APIVersion: "1.41",

backend/mcp/manager.go

@@ -252,6 +252,11 @@ func (m *Manager) buildDockerCommand(server *MCPServer) string {
 		cmd += fmt.Sprintf(" -e %s=%s", k, v)
 	}
 
+	// Add volumes
+	for src, dst := range server.Config.Volumes {
+		cmd += fmt.Sprintf(" -v %s:%s", src, dst)
+	}
+	
 	// Add type-specific configurations
 	switch server.Type {
 	case "filesystem":

backend/mcp/types.go

@@ -22,6 +22,7 @@ type MCPConfig struct {
 	Image   string            `json:"image"`
 	Command []string          `json:"command,omitempty"`
 	Env     map[string]string `json:"env,omitempty"`
+	Volumes map[string]string `json:"volumes,omitempty"`
 
 	// Type-specific fields
 	Filesystem *FilesystemConfig `json:"filesystem,omitempty"`

ui/src/components/MCP/types.ts

@@ -13,6 +13,7 @@ export interface MCPConfig {
   image: string;
   command?: string[];
   env?: Record<string, string>;
+  volumes?: Record<string, string>;
   filesystem?: FilesystemConfig;
   docker?: DockerConfig;
   shell?: ShellConfig;