Files
t3mp3st/docs/DOCKER.md
T
Nicolas Pastorello ef5c7c3f51 fix: address Docker security and stability issues from PR review
Fixes all issues raised in PR #47 review:

1. Add .dockerignore to prevent:
   - Real .env secrets baked into image layers
   - Host node_modules (glibc) overwriting alpine (musl) → ABI mismatch
   - .git, reports/, evidence/ bloating the image

2. Fix compose host-binding:
   - Remove T3MP3ST_HOST=127.0.0.1 override (was breaking port forwarding)
   - Server now binds to 0.0.0.0 in-container (DOCKER=true from Dockerfile)
   - Host mapping stays 127.0.0.1:3333:3333 for security

3. Add critical security warning in DOCKER.md:
   - Explain exposure risk of 0.0.0.0 binding + disabled Host-header guard
   - Document safe vs unsafe deployment patterns
   - Warn against network_mode: host and -p 3333:3333 without 127.0.0.1

4. Update base image:
   - node:18-alpine → node:22-alpine (Node 18 EOL)
   - Pin by digest @sha256:16e22a550... (prevent floating tag drift)

5. Fix healthcheck in compose:
   - Was always returning success (process.exit(0))
   - Now actually tests /api/health endpoint
   - Add start_period: 40s to align with Dockerfile

6. Fix port typos in DOCKER.md:
   - 3000 → 3333 in troubleshooting examples
   - Update all example snippets to node:22-alpine with digest
2026-07-08 20:34:34 -03:00

5.0 KiB

T3MP3ST Docker Deployment

Run T3MP3ST in a containerized environment. The Docker setup provides a minimal Node.js runtime with persistent volumes for reports and evidence.

Quick Start

# Build and run
docker compose up -d

# View logs
docker compose logs -f

# Stop
docker compose down

The API server is available at http://localhost:3333.

Test endpoints:

curl http://localhost:3333/api/health
curl http://localhost:3333/api/bounty/platforms

Prerequisites

  • Docker Engine 20.10+
  • Docker Compose 2.0+

Verify installation:

docker --version
docker compose version

Environment Configuration

Copy the environment template and configure API keys:

cp .env.example .env

Edit .env with your credentials:

ANTHROPIC_API_KEY=sk-ant-xxx
OPENAI_API_KEY=sk-xxx
OPENROUTER_API_KEY=xxx

The compose file mounts .env into the container automatically.

Volume Mounts

Host Path Container Path Purpose
./reports /app/reports Engagement reports and findings
./evidence /app/evidence Collected evidence and artifacts

Data persists across container restarts.

Running Commands

Execute any npm script inside the container:

# CLI
docker compose exec app npm run dev

# Setup
docker compose exec app npm run setup

# Doctor check
docker compose exec app npm run doctor

# Verify claims
docker compose exec app npm run verify-claims

# Run benchmarks
docker compose exec app npm run cve:bench
docker compose exec app npm run cloud:bench
docker compose exec app npm run mobile:bench

Development Mode

For live code changes, mount the source directory:

# docker-compose.dev.yml
services:
  app:
    build: .
    volumes:
      - ./src:/app/src
      - ./scripts:/app/scripts
      - ./reports:/app/reports
      - ./evidence:/app/evidence
    command: npm run dev

Run with:

docker compose -f docker-compose.yml -f docker-compose.dev.yml up

Build Optimization

The default Dockerfile is single-stage for simplicity. For production, consider a multi-stage build:

FROM node:22-alpine@sha256:16e22a550f3863206a3f701448c45f7912c6896a62de43add43bb9c86130c3e2 AS builder
WORKDIR /app
COPY package*.json tsconfig.json ./
RUN npm ci
COPY . .
RUN npm run build

FROM node:22-alpine@sha256:16e22a550f3863206a3f701448c45f7912c6896a62de43add43bb9c86130c3e2
WORKDIR /app
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
COPY package*.json ./
CMD ["npm", "start"]

This reduces final image size from ~800MB to ~300MB.

Troubleshooting

Container exits immediately

Check logs for startup errors:

docker compose logs app

Verify .env file exists and contains valid API keys.

Permission errors on volumes

Ensure the host directories are writable:

mkdir -p reports evidence
chmod 755 reports evidence

On Linux, match container UID/GID if needed:

sudo chown -R $(id -u):$(id -g) reports evidence

Port 3333 already in use

Change the host port in docker-compose.yml (keep the 127.0.0.1: prefix for security):

ports:
  - "127.0.0.1:8080:3333"  # host:container

Cleanup

Remove containers and volumes:

docker compose down -v

Remove the image:

docker rmi t3mp3st-app

Full cleanup (use with caution):

docker system prune -a --volumes

Security Notes

⚠️ CRITICAL: External Exposure Risk

The Docker setup binds the server to 0.0.0.0 inside the container to allow port forwarding. This disables the Host-header/DNS-rebinding guard in server.ts.

SAFE: The default docker-compose.yml publishes the port as 127.0.0.1:3333:3333, which restricts access to localhost only.

UNSAFE: Running docker run -p 3333:3333 (without the 127.0.0.1: prefix) or network_mode: host exposes the unauthenticated command-executing API on all network interfaces (0.0.0.0), allowing anyone on your network (or the internet if port-forwarded) to execute arbitrary system commands.

Deployment Rules:

  • ✅ Always bind to 127.0.0.1 on the host: -p 127.0.0.1:3333:3333
  • ✅ Use a reverse proxy (nginx, Caddy, Coolify) with authentication for external access
  • ❌ Never use network_mode: host in untrusted networks
  • ❌ Never publish to 0.0.0.0 without authentication middleware

Additional Security:

  • Container runs as root by default. For production, add a non-root user in the Dockerfile.
  • The .env file is excluded from the image via .dockerignore to prevent secret leakage.
  • Network mode is bridge by default (isolated from host network).

Integration with Tools

External security tools (nuclei, ffuf, sqlmap) can run in separate containers or be installed in a custom Dockerfile:

FROM node:22-alpine@sha256:16e22a550f3863206a3f701448c45f7912c6896a62de43add43bb9c86130c3e2
RUN apk add --no-cache nmap nuclei ffuf
# ... rest of Dockerfile

Refer to docs/INSTALL_MATRIX.md for the full tool list.