Docker Deployment Checklist: 15 Things to Verify Before Going Live
Deploying Docker containers to production is a high-stakes operation. A misconfigured container can expose sensitive data, consume excessive resources, crash under load, or silently fail while appearing healthy. This checklist covers the 15 critical items you should verify before every Docker deployment, with free tools that automate most of the checks.
Image and Build Configuration
1. Dockerfile Uses Multi-Stage Builds
Single-stage Dockerfiles include build dependencies in the final image, making it 3-5x larger than necessary. The Dockerfile Generator creates multi-stage builds automatically.
2. Base Image Version Is Pinned
Using the latest tag breaks reproducibility. Always pin to a specific version (e.g., node:20.11.0-alpine3.19).
3. Image Size Is Optimized
Large images pull slowly, cost more to store, and increase attack surface. The Docker Image Size Estimator helps you compare base images and predict final sizes.
4. Build Context Is Clean
Unnecessary files in the build context slow down builds and may expose secrets. The Docker Ignore Generator creates framework-aware .dockerignore files.
Security Configuration
5. Container Runs as Non-Root User
Running as root in a container is a significant security risk. Always create a non-root user in your Dockerfile.
6. No Secrets in Image
API keys, passwords, and tokens should never be baked into images. Use environment variables or secret management. The Environment Variable Validator scans for exposed secrets.
7. Image Has Minimal Attack Surface
Only install packages that are strictly necessary at runtime. Every additional package is a potential vulnerability.
Health and Monitoring
8. Health Check Is Configured
Container orchestrators need health checks to make routing decisions. The Docker Healthcheck Builder generates proper HEALTHCHECK instructions.
9. Logging Is Configured
Ensure your application logs to stdout/stderr so container logs are captured by the orchestrator.
10. Resource Limits Are Set
Without CPU and memory limits, a single container can consume all available resources on a host. Define limits in your compose or orchestration configuration.
Networking and Dependencies
11. Service Dependencies Are Declared
In multi-service setups, declare dependency ordering so services start in the correct sequence. The Docker Compose Generator handles this automatically.
12. Environment Variables Are Validated
Missing or incorrect environment variables cause crashes. The Deployment Readiness Checker validates your configuration before deployment.
13. Volumes Are Properly Configured
Data that must persist across container restarts should be stored in named volumes, not the container filesystem.
Production Readiness
14. SSL Certificates Are Valid
The SSL Checker validates your SSL/TLS configuration. The SSL Expiry Monitor tracks certificate expiration.
15. Application Performance Is Measured
Establish a performance baseline before going live using the Website Speed Test and Uptime Checker.
Automating the Checklist
Most of these checks can be automated with the free Deployxa tools. Generate your configurations, validate your setup, and deploy with confidence. When you are ready, create a free Deployxa account for zero-config Docker deployments with automatic SSL and monitoring.