Constant ENV 

pub const ENV: &str = r#"# -------------------------------------------------------------------------
# Smaple values
#
# [Mongo DB]
# DATABASE_URL=mongodb+srv://<username>:<your-password><your-cluster>.<unique_id>.mongodb.net/?retryWrites=true&w=majority&appName=YourCluster
# DATABASE=database_name
#
# 
# [PostgreSQL]
# DATABASE_URL="postgres://username:password@host:port/database_name?sslmode=require"
# DATABASE=database_name
#
#
# DATABASE_URL="postgresql://username:password@localhost:5432/your_database"
# DATABASE=database_name
#
#
# [MySQL]
# DATABASE_URL="mysql://username:password@host:port/database_name"
# DATABASE_URL="mysql://root:password@localhost:3306/your_database"
# DATABASE=database_name
#
#
# [MS SQL Server]
# DATABASE_URL="mssql://username:password@host:port/database_name"
# DATABASE_URL="mssql://username:password@localhost:1433/your_database"
# DATABASE_URL="mssql://username:password@host\\instance_name/database_name" # For named instances
# DATABASE=database_name
#
# 
# [SQLite]
# DATABASE_URL="sqlite://./path/to/your/database.db"
# DATABASE_URL="sqlite://./data/app.db" # Example for a database file in a 'data' folder
#
#
# Hex value, can be generated via Open SSL cli or random keygen
# AUTH_KEY=qaZxSwefcdVfrtgbHy6HnJUjnmJUikmlo=
# -----------------------------------------------------------


DATABASE_URL=
DATABASE=
AUTH_KEY=
"#;