fix: Use nix paths for updater script

apps/updater/main.ts

@@ -1,6 +1,11 @@
 import { parseArgs } from 'https://deno.land/[email protected]/cli/parse_args.ts';
+import * as path from "https://deno.land/[email protected]/path/mod.ts";
 import { LockFile, SteamObject, parseObject } from './parser.ts'
 
+const __filename = path.fromFileUrl(import.meta.url);
+// Without trailing slash
+const __dirname = path.dirname(path.fromFileUrl(import.meta.url));
+
 const utf8Decoder = new TextDecoder();
 
 /**
@@ -94,6 +99,7 @@ async function updateLockFile(
 const main = async () => {
   const args = parseArgs(Deno.args, {
     alias: {
+      "a": "add-to-store",
       "d": "dry-run"
     },
     boolean: ["add-to-store", "dry-run", "help"],
@@ -131,7 +137,7 @@ async function prefetch(
   branch: string,
   addToStore: boolean,
 ): Promise<string> {
-  const command = new Deno.Command("./apps/updater/prefetch.sh", {
+  const command = new Deno.Command(`${__dirname}/prefetch.sh`, {
       env: {
           appId, depotId, manifestId, branch,
           name: `${name}-depot`,

apps/updater/prefetch.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Mostly copied from https://github.com/nix-community/steam-fetcher/blob/2033f99c7aee506f5af18026a3cab1c93bd0439f/fetch-steam/builder.sh