How to use Docker .env file Make your docker-compose.yml composition easier and cleaner by declaring variables in an .env file. The Docker environment variable file (.env) is crucial when you’re creating complex container deployments. As you might expect from the name, this file allows you to declare environment variables for your containers. This comes in quite handy, as the .env file can be reused for other containers or quickly edited—instead of having to edit the more complex docker-compose.yml files. I want to show you the

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