diff --git a/Dockerfile b/Dockerfile
index 14d7ceaa..9828ce46 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,6 +36,9 @@ WORKDIR /app
 # to store git revision in build
 RUN apk add --no-cache git
 
+# The SvelteKit/Vite production build OOMs at Node's ~2GB default heap.
+ENV NODE_OPTIONS="--max-old-space-size=6144"
+
 COPY package.json package-lock.json ./
 RUN npm ci --force