Docker Best Practices Multi-Stage Build Separate dependency installation from build steps. Final stage contains only runtime artifacts. Python Multi-Stage Docker Compose .dockerignore Always include a to reduce build context size and prevent leaking secrets. Image Optimization Tips Combine commands to reduce layers. Order instructions from least to most frequently changing for cache efficiency. Anti-Patterns - Running as root inside containers - Using when suffices (ADD auto-extracts tarballs, pulls URLs) - Storing secrets in environment variables in Dockerfiles - Not pinning base image versi…