test: install bash and execute with bash

Author: DanielleMaywood

registry/coder/modules/devcontainers-cli/main.test.ts

@@ -23,6 +23,9 @@ const executeScriptInContainerWithPackageManager = async (
   const instance = findResourceInstance(state, "coder_script");
   const id = await runContainer(image);
 
+  // Install bash
+  await execContainer(id, [shell, "-c", "apk add bash"]);
+
   // Install the specified package manager
   if (packageManager === "npm") {
     await execContainer(id, [shell, "-c", "apk add nodejs npm"]);
@@ -49,7 +52,7 @@ const executeScriptInContainerWithPackageManager = async (
 
   const resp = await execContainer(
     id,
-    [shell, "-c", instance.script],
+    ["bash", "-c", instance.script],
     [
       "--env",
       "CODER_SCRIPT_BIN_DIR=/tmp/coder-script-data/bin",