Best practices for working with environment variables in Docker Compose
Be cautious about including sensitive data in environment variables. Consider using Secrets for managing sensitive information.
Be aware of how Docker Compose handles the
precedence of environment variables from different sources (
.env files, shell variables, Dockerfiles).
Consider how your application adapts to different environments. For example development, testing, production, and use different
.env files as needed.
Understand how interpolation works within compose files for dynamic configurations.
Be aware that you can override environment variables from the command line when starting containers. This is useful for testing or when you have temporary changes.