Update Dockerfile

Dockerfile

@@ -1,7 +1,7 @@
 FROM ubuntu:latest
 
 # Install required packages
-RUN apt-get update && apt-get install -y curl
+RUN apt-get update && apt-get install -y curl bash
 
 # Fetch ttyd binary
 RUN curl -Lo /usr/local/bin/ttyd https://github.com/tsl0922/ttyd/releases/download/1.7.3/ttyd.x86_64
@@ -13,4 +13,4 @@ RUN chmod +x /usr/local/bin/ttyd
 EXPOSE 7681
 
 # Start ttyd with the specified options
-CMD ["/usr/local/bin/ttyd", "-W", "--port", "7681"]
+CMD ["/usr/local/bin/ttyd", "-W", "--port", "7681", "bash"]