Fix umami script not added

docker-compose.yml

@@ -6,7 +6,11 @@ services:
       dockerfile: Dockerfile
       args:
         # Build-time toggle for service worker registration in the generated static HTML.
-        PUBLIC_ENABLE_SW: "true"
+        PUBLIC_ENABLE_SW: ${PUBLIC_ENABLE_SW:-true}
+        # Public, build-time config baked into the HTML.
+        PUBLIC_SITE_URL: ${PUBLIC_SITE_URL:-}
+        PUBLIC_UMAMI_SCRIPT_URL: ${PUBLIC_UMAMI_SCRIPT_URL:-}
+        PUBLIC_UMAMI_WEBSITE_ID: ${PUBLIC_UMAMI_WEBSITE_ID:-}
     ports:
       - "8080:80"
     networks:
@@ -28,4 +32,4 @@ services:
 
 networks:
   fast-website-network:
-    driver: bridge
+    driver: bridge