From 51c779dffa7f0b98718b5f6116f10ddb5765cf48 Mon Sep 17 00:00:00 2001
From: Thomas Durieux <5577568+tdurieux@users.noreply.github.com>
Date: Thu, 8 Oct 2026 15:12:57 +0200
Subject: [PATCH] fix: install native dependencies for the Docker runtime
 (#881)

---
 Dockerfile | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 217160b..d7f8a39 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,8 +16,9 @@ COPY public ./public
 COPY src ./src
 RUN npm run build
 
-# Stage 3: prod-only deps. Independent of source so it caches well.
-FROM node:22-slim AS prod-deps
+# Stage 3: install production deps on the runtime's libc. Native optional
+# dependencies such as zstd must select musl binaries for the Alpine runtime.
+FROM node:22-alpine AS prod-deps
 WORKDIR /app
 COPY package.json package-lock.json ./
 RUN --mount=type=cache,id=npm-prod,target=/root/.npm,sharing=locked \
@@ -31,6 +32,7 @@ EXPOSE 5000
 WORKDIR /app
 
 COPY --from=prod-deps /app/node_modules ./node_modules
+RUN node -e "const assert = require('node:assert/strict'); const zstd = require('@mongodb-js/zstd'); (async () => { const input = Buffer.from('native compression smoke test'); const compressed = await zstd.compress(input, 3); assert.deepEqual(await zstd.decompress(compressed), input); })().catch(error => { console.error(error); process.exit(1); });"
 COPY --from=build /app/build ./build
 COPY --from=build /app/public ./public
 COPY package.json ./package.json