diff --git a/Dockerfile b/Dockerfile
index 33dde49..fdcd0f2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,7 @@ RUN apk add --no-cache curl && \
 ENV PATH="/root/.cargo/bin:$PATH"
 
 COPY . /app
-RUN cd /app && cargo build --release && cp target/release/ssh-tui /app/tui
+RUN cd /app && cargo build --release && cp target/release/ssh-tui /app/tui && chmod +x /app/tui
 
 EXPOSE 22
 CMD ["/usr/local/bin/sshserver"]
diff --git a/src/main.rs b/src/main.rs
index 1ca0234..5c4ef9e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -11,14 +11,14 @@ use ratatui::{backend::CrosstermBackend, Terminal};
 use std::io::stdout;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
+    eprintln!("TUI started");
     enable_raw_mode()?;
     let (width, height) = match crossterm::terminal::size() {
         Ok((w, h)) if w > 0 && h > 0 => (w, h),
         _ => (80, 24),
     };
     println!("Width: {}, Height: {}", width, height);
-    let use_alternate_screen =
-        std::env::var("SSH_CLIENT").is_err() && std::env::var("SSH_TTY").is_err();
+    let use_alternate_screen = true;
     let mut stdout = stdout();
     if use_alternate_screen {
         execute!(stdout, EnterAlternateScreen)?;