create separate shell function

libs/wingsdk/src/shared/misc.ts

@@ -1,8 +1,9 @@
-import { ExecOptions, exec } from "child_process";
+import { ExecOptions, ExecFileOptions, exec, execFile } from "child_process";
 import { readFileSync } from "fs";
 import { promisify } from "util";
 
 const execPromise = promisify(exec);
+const execFilePromise = promisify(execFile);
 
 export function readJsonSync(file: string) {
   return JSON.parse(readFileSync(file, "utf-8"));
@@ -27,6 +28,19 @@ export function normalPath(path: string) {
  * Just a helpful wrapper around `execFile` that returns a promise.
  */
 export async function runCommand(
+  cmd: string,
+  args: string[],
+  options?: ExecFileOptions
+): Promise<any> {
+  const { stdout } = await execFilePromise(cmd, args, options);
+  return stdout;
+}
+
+/**
+ * Just a helpful wrapper around `exec` that returns a promise.
+ * This will run commands through the shell, while `runCommand` doesn't.
+ */
+export async function shell(
   cmd: string,
   args: string[],
   options?: ExecOptions

libs/wingsdk/src/target-sim/container.inflight.ts

@@ -1,6 +1,6 @@
 import { IContainerClient, HOST_PORT_ATTR } from "./container";
 import { ContainerAttributes, ContainerSchema } from "./schema-resources";
-import { isPath, runCommand } from "../shared/misc";
+import { isPath, runCommand, shell } from "../shared/misc";
 import {
   ISimulatorContext,
   ISimulatorResourceInstance,
@@ -91,7 +91,7 @@ export class Container implements IContainerClient, ISimulatorResourceInstance {
     this.log(`starting container from image ${this.imageTag}`);
     this.log(`docker ${dockerRun.join(" ")}`);
 
-    await runCommand("docker", dockerRun, {
+    await shell("docker", dockerRun, {
       env: {
         ...process.env,
         [WING_STATE_DIR_ENV]: this.context.statedir,