diff --git a/client/Dockerfile b/client/Dockerfile
index c5c1b8fcb..1afb38204 100644
--- a/client/Dockerfile
+++ b/client/Dockerfile
@@ -24,3 +24,39 @@ COPY --from=build /app/dist /usr/share/nginx/html
 EXPOSE 80
 
 CMD ["nginx", "-g", "daemon off;"]
+# syntax=docker/dockerfile:1.6
+
+ARG NODE_VERSION=20
+
+FROM --platform=$BUILDPLATFORM node:${NODE_VERSION}-slim AS build
+ENV NODE_OPTIONS="--max-old-space-size=4096"
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY . .
+RUN npm run build
+
+# Assets-only image: no web server. Contains built files at /dist.
+FROM --platform=$TARGETPLATFORM busybox:stable
+WORKDIR /
+COPY --from=build /app/dist /dist
+COPY env.sh /env.sh
+RUN chmod +x /env.sh
+# No CMD provided intentionally — this image is for copying/volume population.
+# syntax=docker/dockerfile:1.6
+
+ARG NODE_VERSION=20
+
+FROM --platform=$BUILDPLATFORM node:${NODE_VERSION}-slim AS build
+ENV NODE_OPTIONS="--max-old-space-size=4096"
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY . .
+RUN npm run build
+
+# Assets-only image: no web server. Contains built files at /dist.
+FROM --platform=$TARGETPLATFORM busybox:stable
+WORKDIR /
+COPY --from=build /app/dist /dist
+# No CMD provided intentionally — this image is for copying/volume population.