The base port value is incorrect about ultraman

[yukihirop]

Also fix the following

warning: use of deprecated function `dotenv::from_path_iter`: please use `from_path` in conjunction with `var` instead
  --> src/env.rs:10:33
   |
10 |     if let Some(iter) = dotenv::from_path_iter(filepath.as_path()).ok() {
   |                                 ^^^^^^^^^^^^^^
   |
   = note: `#[warn(deprecated)]` on by default

warning: `ultraman` (bin "ultraman" test) generated 1 warning
    Finished test [unoptimized + debuginfo] target(s) in 2.57s
     Running unittests (target/debug/deps/ultraman-bb3643b00a0b9296)