Docker
Images Commands
Build, tag, and manage Docker images effectively. Learn image layering, multi-stage builds, and best practices for creating efficient, secure container images.
18 commands
Pro Tips
Use multi-stage builds to create smaller production images - build in one stage, copy only artifacts to final stage.
Order Dockerfile instructions from least to most frequently changed to maximize layer caching.
Use specific image tags (node:18-alpine) not 'latest' - ensures reproducible builds across environments.
Common Mistakes
Never store secrets in Docker images - they persist in image layers and can be extracted.
Large images take longer to pull and use more disk space. Use alpine bases and minimize layers.