message: Build before proxying
diff: @@ -20,6 +20,7 @@ use url::Url;
  use crate::settings::global_user::GlobalUser;
  use crate::settings::target::Target;
  +use crate::commands;
  use crate::commands::preview::upload;
  const PREVIEW_HOST: &str = "rawhttp.cloudflareworkers.com";
  @@ -30,6 +31,7 @@ pub fn proxy(
  host: Option<&str>,
  port: Option<&str>,
  ) -> Result<(), failure::Error> {
  + commands::build(&target)?;
  let port: u16 = match port {
  Some(port) => port.to_string().parse(),
  None => Ok(3000),
  