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📝 WalkthroughWalkthroughThis PR expands repository Docker ignore patterns, switches Turbo prune output to Changes
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commit: |
Greptile SummaryThis PR adds Docker examples for the
Confidence Score: 1/5
Important Files Changed
Flowchart%%{init: {'theme': 'neutral'}}%%
flowchart TD
A[Docker Build Context\nfiltered by .dockerignore] --> B
subgraph Stage1["Stage 1 — prepare (node:debian)"]
B[Install git, jq, corepack, turbo] --> C[COPY monorepo sources]
C --> D["turbo prune → .turbo-pruned/nextjs-app/"]
end
subgraph Stage2["Stage 2 — builder (FROM prepare)"]
E[COPY pruned json + yarn.lock] --> F[yarn install with cache mount]
F --> G[COPY pruned full sources]
G --> H[yarn turbo run build\nnext.js standalone output]
end
subgraph Stage3_Standard["Stage 3 — runner (node:debian)"]
I[addgroup / adduser / mkdir / chown\n⚠️ missing && operators] --> J[COPY standalone artefacts]
J --> K["CMD node server.js\n(runs as nextjs user — if setup works)"]
end
subgraph Stage3_Distroless["Stage 3 — runner (distroless)"]
L[COPY standalone artefacts] --> M["CMD node server.js\n⚠️ runs as root"]
end
D --> E
H --> I
H --> L
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![greptile-apps[bot]](https://avatars.githubusercontent.com/in/867647?s=60&v=4){kind=small}
| RUN addgroup --system --gid 1001 nodejs \ | ||
| adduser --system --uid 1001 nextjs \ | ||
| mkdir .next \ | ||
| chown nextjs:nodejs .next |
There was a problem hiding this comment.
&& operators — commands won't run
The line-continuation backslashes \ here do NOT separate shell commands; they simply continue a single shell command. As written, adduser, mkdir, and chown are passed as extra positional arguments to addgroup, which will either reject them or silently ignore them. As a result, the nextjs user is never created, the .next directory is never created/owned, and USER nextjs on the next line will cause the container to fail to start (or run as an unintended user on some runtimes).
| RUN addgroup --system --gid 1001 nodejs \ | |
| adduser --system --uid 1001 nextjs \ | |
| mkdir .next \ | |
| chown nextjs:nodejs .next | |
| RUN addgroup --system --gid 1001 nodejs \ | |
| && adduser --system --uid 1001 nextjs \ | |
| && mkdir .next \ | |
| && chown nextjs:nodejs .next |
| # .dockerignore is used to exclude files and directories from being copied into the Docker image during the build process. This helps to reduce the size of the image and improve build times by only including necessary files. | ||
| # keep it at the root of the project to ensure that we don't copy unnecessary files into the Docker image. | ||
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| node_modules | ||
| **/.turbo | ||
| # git (disable if needed in the container) | ||
| .git | ||
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| # dependencies | ||
| **/node_modules | ||
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| # caches | ||
| **/.cache | ||
| **/tsconfig.tsbuildinfo | ||
| **/tsconfig.*.tsbuildinfo | ||
| **/.eslintcache | ||
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| # package managers | ||
| **/.yarn/* | ||
| !**/.yarn/patches | ||
| !**/.yarn/releases | ||
| !**/.yarn/plugins | ||
| .pnp.* | ||
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| # testing | ||
| **/coverage | ||
| **/.out/ | ||
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| # Build directories | ||
| **/apps/*/.next | ||
| **/packages/*/dist | ||
| **/packages/*/docs | ||
| **/.eslintcache | ||
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| # Misc | ||
| .DS_Store | ||
| *.pem | ||
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| # Debug | ||
| npm-debug.log* | ||
| yarn-debug.log* | ||
| yarn-error.log* | ||
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| # IDE | ||
| .idea/* | ||
| .project | ||
| .classpath | ||
| *.launch | ||
| *.sublime-workspace | ||
| .vscode/ | ||
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There was a problem hiding this comment.
.turbo cache directory no longer excluded
The previous .dockerignore explicitly excluded **/.turbo (Turborepo's local build-cache). This entry was removed in the new version. While the newly generated .turbo-pruned output is intentional, the .turbo cache directories on the host can be large and are never needed inside the image. Omitting this exclusion will increase Docker build-context transfer size on incremental builds.
Consider re-adding the exclusion:
# turbo cache
**/.turbo
The same entry is also missing from examples/apps/nextjs-app/docker/.dockerignore.
| #RUN mkdir .next | ||
| #RUN chown nextjs:nodejs .next | ||
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| #USER nextjs |
There was a problem hiding this comment.
The addgroup/adduser/USER nextjs setup is entirely commented out in the distroless stage, meaning the container runs as root (UID 0) in production. The gcr.io/distroless/nodejs* images ship a built-in nonroot user (UID 65532). Running as root is unnecessary here and contradicts the security principle of least privilege.
Consider switching to the non-root user that the distroless image already provides:
USER nonrootor, equivalently, use the :nonroot image variant:
ARG DISTROLESS_IMAGE=gcr.io/distroless/nodejs24-debian13:nonroot![coderabbitai[bot]](https://avatars.githubusercontent.com/in/347564?s=60&v=4){kind=small}
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Actionable comments posted: 4
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.
Inline comments:
In @.dockerignore:
- Around line 10-15: Add an ignore pattern for the Turbo cache to the
.dockerignore by including the '**/.turbo' entry (matching the existing glob
style like '**/.cache'); update the .dockerignore file where other cache
patterns are listed (near '**/.cache', '**/.eslintcache', etc.) so the Turbo
cache directory is excluded from Docker build context.
In `@examples/apps/nextjs-app/docker/.dockerignore`:
- Around line 10-15: The .dockerignore is missing an entry to exclude the Turbo
cache; update the Docker ignore (examples/apps/nextjs-app/docker/.dockerignore)
to add an exclusion for the Turbo cache directory (add a pattern like **/.turbo)
so the Turbo cache is not included in the Docker build context and doesn't
inflate image builds.
In `@examples/apps/nextjs-app/docker/Dockerfile`:
- Around line 113-116: The RUN instruction in the Dockerfile chains multiple
shell commands (addgroup, adduser, mkdir, chown) but misses the required &&
operators between them; update the RUN line for the Dockerfile so each command
is joined with && (and retain trailing backslashes for line continuation) to
ensure commands execute sequentially and the build doesn't treat later tokens as
arguments—specifically modify the RUN that invokes addgroup, adduser, mkdir
.next, and chown nextjs:nodejs .next to use "&&" between each command.
In `@examples/apps/nextjs-app/docker/Dockerfile.distroless`:
- Around line 94-131: Add a non-root user and ensure files are owned by it in
the runner stage: set USER 65532:65532 in the runner stage (after WORKDIR or
after all COPYs as appropriate) and update the COPY --from=builder commands that
bring in files (the COPY of next.config.mjs and package.json, COPY of
.next/standalone, COPY of .next/static, and COPY of public) to use
--chown=65532:65532 so the runtime files are owned by the distroless nonroot
user and the container does not run as root.
ℹ️ Review info
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Configuration used: defaults
Review profile: CHILL
Plan: Pro
Run ID: ed60295c-1e60-4532-88d5-3a74a216e0ff
📒 Files selected for processing (7)
.dockerignore.gitignoreexamples/apps/nextjs-app/docker/.dockerignoreexamples/apps/nextjs-app/docker/Dockerfileexamples/apps/nextjs-app/docker/Dockerfile.distrolessexamples/apps/nextjs-app/docker/docker-compose.distroless.ymlexamples/apps/nextjs-app/next.config.mjs
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- examples/apps/nextjs-app/next.config.mjs
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