Learn DOCKER with Real Code Examples

Use multi-stage builds to reduce image size

Keep containers stateless when possible

Limit resource usage via CPU/memory flags

Use caching to speed up image builds

Monitor container performance with Docker stats or Prometheus

Use minimal base images

Keep images and dependencies up-to-date

Run containers with non-root users

Avoid storing secrets in images; use environment variables or secrets management

Use Docker Bench Security or similar audits

Monitor containers with Docker stats

Use Prometheus/Grafana for metrics

Track logs using ELK stack or centralized logging

Health checks and readiness probes

Audit image and container security

Keep Dockerfiles clean and minimal

Use multi-stage builds for smaller images

Write automated tests for containerized apps

Use CI/CD pipelines to enforce best practices

Document images and container setup clearly