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Dockerfile Best Practices & Docker Security — non-root, multi-stage, layer caching, secrets, distroless


🐳 Dockerfile Best Practices

Multi-stage builds (1/10th the size), non-root users, layer caching order, .dockerignore, secrets that don’t leak into history, distroless vs alpine vs slim, COPY vs ADD, ENTRYPOINT vs CMD, HEALTHCHECK, read-only filesystem, and image scanning.



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Watch as a Web Story
5 Docker Mistakes That Break Production — quick visual guide, 2 min

🔍 Free scanner: Docker Compose Security Checker — check your docker-compose.yml for security issues: exposed ports, missing user constraints, plain-text secrets, and more.