fix: content collections custom path (#67)

* fix: use process.env instead of import.meta.env to retrieve content dir
* docs: add changeset

Author: ArmandPhilippot

.changeset/thin-feet-return.md

@@ -0,0 +1,5 @@
+---
+"apeu": patch
+---
+
+Fixes an issue where CONTENT_PATH was no longer defined when using this project as a Git submodule.

src/lib/astro/loaders/glob-loader.ts

@@ -7,7 +7,10 @@ import {
   type AvailableLanguage,
 } from "../../../utils/i18n";
 
-const CONTENT_DIR: string = import.meta.env?.CONTENT_PATH ?? "./content";
+/* This is not a supported usage, so it could break. Currently `import.meta.
+ * env` doesn't work anymore when using a path outside the project's root (ie.
+ * when I'm using a Git submodules). Using `process.env` seems to fix that. */
+const CONTENT_DIR: string = process.env?.CONTENT_PATH ?? "./content";
 
 const getLocalesPattern = () => {
   if (CONFIG.LANGUAGES.AVAILABLE.length > 1)