perf: ship a standalone slim Docker image (~590MB to ~283MB) (#841)

Enable Next `output: 'standalone'` and rewrite the Dockerfile to package only the traced standalone server + .next/static + public on node:20-slim (glibc, matching the runner), running `node server.js`. No in-image npm ci, no full source or dependency tree. Cuts the image ~52%, so docker push and the server pull get much faster.

Also fixes a latent entrypoint bug (${VAR:"none"} -> ${VAR:-"none"}) that busybox sh tolerated but Debian dash (node:20-slim /bin/sh) rejects, which would otherwise crash the container on boot.

Smoke-tested via isolated build + docker run: boots in 37ms, all routes 200, redirects still bundled (/slack-url -> 307), static + public assets served, DocSearch env-injection intact.
This commit is contained in:
Jack Carter
2026-07-09 16:51:17 +02:00
committed by GitHub
parent 76845ec77f
commit 44cab34f6f
4 changed files with 28 additions and 24 deletions

View File

@@ -7,7 +7,7 @@
set -ex
NEXT_PUBLIC_DOCSEARCH_APP_ID=${NEXT_PUBLIC_DOCSEARCH_APP_ID:-"none"}
NEXT_PUBLIC_DOCSEARCH_API_KEY=${NEXT_PUBLIC_DOCSEARCH_API_KEY:-"none"}
NEXT_PUBLIC_DOCSEARCH_INDEX_NAME=${NEXT_PUBLIC_DOCSEARCH_INDEX_NAME:"none"}
NEXT_PUBLIC_DOCSEARCH_INDEX_NAME=${NEXT_PUBLIC_DOCSEARCH_INDEX_NAME:-"none"}
find /usr/app/.next \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i "s#APP_NEXT_PUBLIC_DOCSEARCH_APP_ID#${NEXT_PUBLIC_DOCSEARCH_APP_ID}#g"
find /usr/app/.next \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i "s#APP_NEXT_PUBLIC_DOCSEARCH_API_KEY#${NEXT_PUBLIC_DOCSEARCH_API_KEY}#g"