fn env(expression: &str) -> Option<String> {
    if let Ok(f) = File::open("/var/www/config/global/.env") {
        let file = BufReader::new(f);

        let regex = Regex::new(expression).unwrap();

        let mut result: Option<String> = None;

        for line in file.lines() {
            let l = line.unwrap();

            if regex.is_match(&l) {
                for cap in regex.captures_iter(&l) {
                    result = Some(cap[1].to_string());
                }
            }
        }

        result
    }

    None
}