/btwhow is the process to install this program as a command on linux
      to type "$ docmost-rust" on the console and the program starts,
      also how to add env variables for $baseurl $email to
      automatically load this values on the login screen


    cargo build --release
    sudo cp target/release/docmost-rust /usr/local/bin/docmost-rust

    That's it. Any user on the system can now run docmost-rust from any
     directory.

    If you prefer a user-local install (no sudo):
    cargo install --path .
    This puts the binary in ~/.cargo/bin/, which is already in your
    $PATH if you installed Rust via rustup.

    ---
    Environment variables for pre-filling login

    Add these to your ~/.bashrc, ~/.zshrc, or
    ~/.config/fish/config.fish:

    bash/zsh:
    export DOCMOST_URL="https://docmost.nakano47.com"
    export DOCMOST_EMAIL="chamagua1@proton.me"

    fish:
    set -x DOCMOST_URL "https://docmost.nakano47.com"
    set -x DOCMOST_EMAIL "chamagua1@proton.me"

    Then in the Rust code, replace the hardcoded defaults in
    LoginForm::new() inside src/app.rs:

    impl LoginForm {
        pub fn new() -> Self {
            Self {
                url: std::env::var("DOCMOST_URL")
                    .unwrap_or_else(|_|
    "http://localhost:3000".to_string()),
                email: std::env::var("DOCMOST_EMAIL")
                    .unwrap_or_default(),
                password: String::new(),
                // ...
            }
        }
    }