building-container.md

Guidelines for Building a Container

Dockerfile Examples

Note: These may not perfectly match Dockerflow as the spec is a current WIP

• BrowserID Verifier - Node 4
• TestPilot - Python 3

Dockerfile Guidelines

• Put the application into /app within the container
• Set a non-root user and group app in the container and run everything as this user
  • make the uid for the user 10001
  • make the guid for the group 10001
• Use the Docker's base containers for a language.
  • Node
  • Python
  • Golang
• Build the smallest container you can
• Optimize for cachability. Put commands that make fewer changes (apt-get, pip install, npm install) earlier in the Dockerfile.