added caddy

frontend/Dockerfile

@@ -0,0 +1,20 @@
+# ── Build ───────────────────────────────────────────────────
+FROM node:22-bookworm-slim AS build
+WORKDIR /app
+RUN corepack enable
+
+COPY package.json pnpm-lock.yaml pnpm-workspace.yaml .npmrc ./
+RUN pnpm install --frozen-lockfile
+
+COPY . .
+RUN pnpm build && pnpm prune --prod
+
+# ── Runtime ─────────────────────────────────────────────────
+FROM node:22-bookworm-slim AS runtime
+WORKDIR /app
+ENV NODE_ENV=production
+COPY --from=build /app/build ./build
+COPY --from=build /app/node_modules ./node_modules
+COPY --from=build /app/package.json ./
+EXPOSE 3000
+CMD ["node", "build"]