diff --git a/admin/webpack.config.js b/admin/webpack.config.js
index ccf6e4d0bd..584cfad214 100644
--- a/admin/webpack.config.js
+++ b/admin/webpack.config.js
@@ -225,7 +225,8 @@ module.exports = (env, argv) => {
           RETICULUM_SERVER: process.env.RETICULUM_SERVER,
           CORS_PROXY_SERVER: process.env.CORS_PROXY_SERVER,
           POSTGREST_SERVER: process.env.POSTGREST_SERVER,
-          UPLOADS_HOST: process.env.UPLOADS_HOST
+          UPLOADS_HOST: process.env.UPLOADS_HOST,
+          BASE_ASSETS_PATH: process.env.BASE_ASSETS_PATH
         })
       })
     ]
diff --git a/src/utils/configs.js b/src/utils/configs.js
index eb8c96d3ca..cec4bf3572 100644
--- a/src/utils/configs.js
+++ b/src/utils/configs.js
@@ -22,9 +22,17 @@ let isAdmin = false;
   const el = document.querySelector(`meta[name='env:${x.toLowerCase()}']`);
   configs[x] = el ? el.getAttribute("content") : process.env[x];
 
-  if (x === "BASE_ASSETS_PATH" && configs[x]) {
+  const BASE_ASSETS_PATH_KEY = "BASE_ASSETS_PATH";
+  if (x === BASE_ASSETS_PATH_KEY && configs[BASE_ASSETS_PATH_KEY]) {
+    // BASE_ASSETS_PATH might be a relative URL like "/" when it is set in
+    // .env or .defaults.env when running locally. We need to convert that
+    // to an absolute URL.
+    if (!configs[BASE_ASSETS_PATH_KEY].startsWith("http")) {
+      configs[BASE_ASSETS_PATH_KEY] = new URL(configs[BASE_ASSETS_PATH_KEY], window.location).toString();
+    }
+
     // eslint-disable-next-line no-undef
-    __webpack_public_path__ = configs[x];
+    __webpack_public_path__ = configs[BASE_ASSETS_PATH_KEY];
   }
 });
 
diff --git a/webpack.config.js b/webpack.config.js
index ae41015306..200355f7a5 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -322,7 +322,7 @@ module.exports = async (env, argv) => {
           if (req.method === "OPTIONS") {
             res.send();
           } else {
-            const url = req.path.replace("/cors-proxy/", "");
+            const url = req.originalUrl.replace("/cors-proxy/", "");
             request({ url, method: req.method }, error => {
               if (error) {
                 console.error(`cors-proxy: error fetching "${url}"\n`, error);
@@ -667,6 +667,7 @@ module.exports = async (env, argv) => {
           GA_TRACKING_ID: process.env.GA_TRACKING_ID,
           POSTGREST_SERVER: process.env.POSTGREST_SERVER,
           UPLOADS_HOST: process.env.UPLOADS_HOST,
+          BASE_ASSETS_PATH: process.env.BASE_ASSETS_PATH,
           APP_CONFIG: appConfig
         })
       })