Dockerfile Guide

This guide is a consortium of best practices to follow when writing Dockerfile files.

Best Practices

• Use official Docker images
• Run as non-root user
• Do not use latest tags
• Use image tags as git tags
• Use COPY (be specific when possible), not ADD
• Avoid installing unnecessary dependencies
• Each container should have only one responsibility

Resources

• Docker - Best practices for writing Dockerfiles
• Docker - Intro Guide to Dockerfile Best Practices
• Hexops - Dockerfile best practices