diff --git a/web/Dockerfile b/web/Dockerfile
index b16977c..c7c4baf 100644
--- a/web/Dockerfile
+++ b/web/Dockerfile
@@ -3,6 +3,8 @@ WORKDIR /app
 COPY package.json package-lock.json ./
 RUN npm ci
 COPY . .
+ARG VITE_SPACETIMEDB_URL=""
+ENV VITE_SPACETIMEDB_URL=$VITE_SPACETIMEDB_URL
 RUN npm run build
 
 FROM node:20-alpine