Docker & CI/CD Best Practices

# Docker & CI/CD Best Practices After deploying multiple containerized applications, I've learned several lessons about optimizing Docker builds and CI/CD pipelines. ## Multi-stage Builds Using multi-stage Docker builds can significantly reduce image size and improve build times. ## Layer Caching Understanding Docker layer caching is crucial for fast CI/CD pipelines. Ordering your Dockerfile commands correctly can save minutes on each build. ## GitHub Actions Optimization GitHub Actions can get expensive with long-running workflows. Optimizing your workflows with caching and parallel jobs can reduce both time and cost. ## Security Scanning Integrating security scanning into your CI/CD pipeline helps catch vulnerabilities before they reach production.