Feat/docker setup - #32
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Summary of ChangesHello, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request introduces comprehensive Docker support for the application, enabling easier self-hosting and deployment. It containerizes the backend service and provides a Highlights
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📝 WalkthroughWalkthroughThis pull request introduces Docker containerization for the project with configuration files for building and orchestrating containerized services. A .env.example template is added for environment configuration. No application code logic changes are introduced. Changes
Estimated code review effort🎯 2 (Simple) | ⏱️ ~12 minutes Poem
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✏️ Tip: You can configure your own custom pre-merge checks in the settings. ✨ Finishing Touches🧪 Generate unit tests (beta)
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Code Review
This pull request introduces Docker support for self-hosting. However, there are significant security concerns regarding the exposure of database services. Both MongoDB and Redis are configured to expose their default ports to the host machine without any authentication, making them publicly accessible and highly insecure for production or self-hosting environments. Additionally, I've suggested running the backend container as a non-root user, pinning the Redis image version, and adding healthchecks for more reliable service startup.
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Actionable comments posted: 3
🧹 Nitpick comments (1)
docker-compose.yml (1)
35-37: Document Docker Compose version requirement or use short syntax for compatibility.The long
env_filesyntax withrequired: falserequires Docker Compose 2.24.0+. If you need to support older versions, use the short syntax instead. If.envshould be required in your setup, removerequired: falseor setrequired: trueexplicitly.For maximum compatibility
env_file: - - path: .env - required: false + - .env🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In `@docker-compose.yml` around lines 35 - 37, The docker-compose.yml uses the long env_file syntax with "required: false" which requires Compose v2.24.0+; either document that minimum Compose version or switch to the short syntax "env_file: - .env" for broader compatibility, or if .env must be required remove the "required: false" or set "required: true" instead; locate the env_file block (the "env_file" key and its "required" property) and apply one of these changes and/or add a brief comment noting the Compose version requirement.
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.
Inline comments:
In `@backend/Dockerfile`:
- Around line 2-18: The image currently runs as root; create and switch to a
non-root user to improve security: add a system group/user (e.g., addgroup -S
app && adduser -S app -G app or equivalent for alpine), ensure ownership of the
app directory (chown -R app:app /app) after copying files and after running npm
ci, then add a USER app directive before the CMD that runs node app.js so the
process (CMD ["node","app.js"]) runs as the non-root account; reference the
existing WORKDIR /app, RUN npm ci, COPY . ., and CMD ["node","app.js"] steps
when inserting these changes.
In `@docker-compose.yml`:
- Around line 8-9: The compose file is exposing database ports to the host
(e.g., the ports mapping '27017:27017' and the analogous '6379:6379'); remove
the host-facing port bindings and either omit the ports key or replace it with
an internal-only "expose: - 27017" / "expose: - 6379" for the MongoDB and Redis
service blocks so they remain reachable on the Docker network but not bound to
the host. Locate the services that contain the 'ports:' entries (the lines with
'27017:27017' and '6379:6379') and update them accordingly. Ensure no other
services rely on host bindings; if local host access is needed for debugging,
document using an explicit development override file that re-adds host ports.
- Line 15: The compose file currently uses the floating image tag "image:
redis:latest"; replace that with a specific, full patch Redis version (for
example "redis:7.2.2" or whatever the current stable full-version is) so
deployments are reproducible and won't unexpectedly change; update the "image:
redis:latest" entry in docker-compose.yml to the chosen pinned tag.
---
Nitpick comments:
In `@docker-compose.yml`:
- Around line 35-37: The docker-compose.yml uses the long env_file syntax with
"required: false" which requires Compose v2.24.0+; either document that minimum
Compose version or switch to the short syntax "env_file: - .env" for broader
compatibility, or if .env must be required remove the "required: false" or set
"required: true" instead; locate the env_file block (the "env_file" key and its
"required" property) and apply one of these changes and/or add a brief comment
noting the Compose version requirement.
ℹ️ Review info
⚙️ Run configuration
Configuration used: Organization UI
Review profile: CHILL
Plan: Pro
Run ID: f7f6f67b-0bf3-489b-a244-de1e5ad8ae62
📒 Files selected for processing (4)
.env.examplebackend/.dockerignorebackend/Dockerfiledocker-compose.yml
1 participant
🐳 feat: Docker Self-Hosting Support
What's added
backend/Dockerfile— Node 20 Alpine, production-only deps (npm ci --omit=dev)backend/.dockerignore— excludes node_modules, .env, test filesdocker-compose.yml— spins upbackend+mongo:7+redis:7-alpinewith named volumes for data persistence.env.example(root) — Docker-friendly template with pre-filled MONGO_URL and REDIS_URL pointing to service namesHow it works
MONGO_URLandREDIS_URLare automatically overridden inside compose to use Docker service names (mongo,redis), so no manual config is needed for the DB/cache layer. External services (Supabase, Resend) are still configured via.env.Usage
```bash
cp .env.example .env
Fill in secrets
docker-compose up --build
```
Type of Change
Summary by CodeRabbit