Program.cs

var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();

// No Kestrel port configuration needed: velixir sets ASPNETCORE_HTTP_PORTS, which
// ASP.NET Core reads on startup and binds on every interface.
const string Page = """
    <!doctype html>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <title>Live on velixir</title>
    <style>
      :root { color-scheme: dark; }
      body { margin:0; min-height:100vh; display:grid; place-items:center;
             background:#0b0b10; color:#e8e8ef;
             font:16px/1.6 ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif; }
      main { max-width:34rem; padding:2.5rem 1.5rem; text-align:center; }
      h1 { font-size:1.6rem; margin:0 0 .5rem; letter-spacing:-.02em; }
      p { color:#a0a0b0; margin:.5rem 0; }
      code { background:#16161f; border:1px solid #26263a; border-radius:6px;
             padding:.15rem .4rem; font-size:.875em; color:#c7d2fe; }
      .dot { display:inline-block; width:.5rem; height:.5rem; border-radius:50%;
             background:#34d399; margin-right:.5rem; vertical-align:middle; }
    </style>
    <main>
      <p><span class="dot"></span>.NET is running on velixir</p>
      <h1>Your first deploy worked.</h1>
      <p>This page is served by your own container, built from source. No Dockerfile was involved.</p>
      <p>Next: edit <code>Program.cs</code>, then run <code>velixir deploy</code>.</p>
    </main>
    """;

app.MapGet("/healthz", () => "ok");
app.MapGet("/", () => Results.Content(Page, "text/html; charset=utf-8"));

app.Run();