feat: remove env variable PUBLIC_DIR

We can automatically deduce the value of this variable, so no need
to explicitly configure it in the env files.

.env.example

@@ -2,7 +2,6 @@ APP_URL=http://localhost:3000/
 COOKIE_DOMAIN=localhost
 COOKIE_SECURE=false
 DATA_DIR=~/.local/state/keybr
-PUBLIC_DIR=~/keybr.com/root/public
 
 DATABASE_CLIENT=sqlite
 DATABASE_FILENAME=~/.local/state/keybr/database.sqlite

packages/server/lib/main.ts

@@ -1,6 +1,7 @@
 import cluster, { type ClusterSettings } from "node:cluster";
 import { Application } from "@fastr/core";
 import { Container } from "@fastr/invert";
+import { Manifest } from "@keybr/assets";
 import { ConfigModule, Env } from "@keybr/config";
 import { Logger } from "@keybr/logger";
 import { Game } from "@keybr/multiplayer-server";
@@ -53,6 +54,7 @@ function makeContainer() {
   container.load(new ConfigModule());
   container.load(new ApplicationModule());
   container.load(new ServerModule());
+  container.get(Manifest); // Sanity check.
   return container;
 }
 

root/_config.js

@@ -0,0 +1,5 @@
+"use strict";
+
+const { join } = require("node:path");
+
+process.env.PUBLIC_DIR = join(__dirname, "public");

root/index.js

@@ -2,4 +2,5 @@
 
 "use strict";
 
+require("./_config.js");
 require("./lib/index.js");

root/keybr.js

@@ -2,4 +2,5 @@
 
 "use strict";
 
+require("./_config.js");
 require("./lib/keybr.js");