refactor: change return type of run command

Author: ZhiXiao-Lin

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nerdctl",
-  "version": "0.0.6",
+  "version": "0.0.7",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
   "description": "Node wrapper for nerdctl",

src/vms/base.ts

@@ -69,12 +69,9 @@ export default abstract class BaseBackend {
   abstract login(
     flags?: LoginCommandFlags,
     server?: string
-  ): Promise<ExecResult>;
+  ): Promise<ShellString>;
 
-  abstract run(
-    image: string,
-    flags?: RunCommandFlags
-  ): Promise<ExecResult | string>;
+  abstract run(image: string, flags?: RunCommandFlags): Promise<ChildProcess>;
 
   abstract stop(
     container: string | string[],

src/vms/lima.ts

@@ -18,34 +18,22 @@ export default class LimaBackend extends BaseBackend {
   async start(): Promise<void> {}
 
   //#region registry
-  async login(flags?: LoginCommandFlags, server?: string): Promise<ExecResult> {
+  async login(
+    flags?: LoginCommandFlags,
+    server?: string
+  ): Promise<ShellString> {
     const command = `${this.container} login ${this.mergeFlags(
       flags
     )} ${server}`;
 
-    return await this.exec(command, { async: false });
+    return (await this.exec(command, { async: false })) as ShellString;
   }
   //#endregion
 
   //#region containers
-  async run(
-    image: string,
-    flags?: RunCommandFlags
-  ): Promise<ExecResult | string> {
+  async run(image: string, flags?: RunCommandFlags): Promise<ChildProcess> {
     const command = `${this.container} run ${this.mergeFlags(flags)} ${image}`;
-
-    if (!flags?.detach) {
-      return await this.exec(command, { async: false });
-    }
-
-    const child = (await this.exec(command)) as ChildProcess;
-
-    return new Promise((resove, reject) => {
-      child.stdout!.on("data", (data) => {
-        if (!data) reject("");
-        resove(data);
-      });
-    });
+    return (await this.exec(command)) as ChildProcess;
   }
 
   async stop(