set urls properly for github pages

Author: rileyhales

vite.config.js

@@ -0,0 +1,16 @@
+import { defineConfig } from "vite";
+
+export default defineConfig(({ mode }) => {
+  // Default for local dev
+  let base = "/";
+
+  // GitHub Actions sets GITHUB_REPOSITORY=owner/repo
+  if (process.env.GITHUB_REPOSITORY) {
+    const repo = process.env.GITHUB_REPOSITORY.split("/")[1];
+    base = `/${repo}/`;
+  }
+
+  return {
+    base,
+  };
+});