Make resource links relative for deployment with arbitrary base URL

package.json

@@ -2,7 +2,12 @@
   "name": "vue-example-app",
   "version": "0.0.1",
   "license": "MIT",
+  "targets": {
+    "default": {
       "source": "src/index.pug",
+      "publicUrl": "."
+    }
+  },
   "devDependencies": {
     "@parcel/transformer-pug": "2.8.3",
     "@parcel/transformer-sass": "2.8.3",