diff --git a/Dockerfile.frontend b/Dockerfile.frontend
index 8e824ab..4260127 100644
--- a/Dockerfile.frontend
+++ b/Dockerfile.frontend
@@ -1,5 +1,7 @@
 FROM oven/bun
 
+ARG BACKEND_URL
+
 WORKDIR /app
 
 COPY . .
@@ -12,6 +14,7 @@ RUN bun run build
 
 ENV HOST=0.0.0.0
 ENV PORT=4321
+ENV BACKEND_URL=${BACKEND_URL}
 
 EXPOSE 4321