What is the purpose of the .env file in MTProxy configuration

1. Separation of Configuration from Code: The `.env` file allows you to keep sensitive information, such as secrets and API keys, separate from the application code. This practice enhances security by preventing sensitive data from being hard-coded into the source files, which could be exposed if the code is shared or published[2][4].

2. Customizable Environment Variables: Users can define various environment variables in the `.env` file, such as `SECRET`, `WORKERS`, and `MTPROTO_REPO_URL`. These variables can be easily modified without changing the code itself, making it convenient to customize the MTProxy configuration based on different deployment environments (e.g., development, testing, production) or specific requirements[3][6].

3. Ease of Use: The `.env` file format is simple and widely adopted, allowing for easy reading and writing of environment variables. This format is recognized by many frameworks and tools, making it a standard approach for managing environment configurations across different applications[2][4].

4. Portability: By using a `.env` file, the configuration can be easily shared across different environments or team members without exposing sensitive information. This practice aligns with the twelve-factor app methodology, which emphasizes strict separation of configuration from code[2][4].

Overall, the `.env` file is an essential component for securely managing configurations in MTProxy deployments, facilitating both flexibility and security.