Update Dockerfile

Dockerfile

@@ -23,6 +23,6 @@ RUN chmod +x NclearOS2.iso
 RUN cp NclearOS2.iso /home/ubuntu
 # Start QEMU and noVNC
 CMD /bin/bash -c " \
-    nohup qemu-system-x86_64 -cpu Nehalem -m 2G -cdrom ~/NclearOS2.iso -hda ~/vm.img -vnc :0 -daemonize -vga vmware -usbdevice tablet && \
+    nohup qemu-system-x86_64 -cpu Nehalem -m 2G -cdrom ~/NclearOS2.iso -hda ~/vm.img -vnc 127.0.0.1:0 -daemonize -vga vmware -usbdevice tablet && \
     cd /noVNC && \
-    websockify --web . 7860 localhost:5900"
+    ./novnc --listen 0.0.0.0:7860 --vnc 127.0.0.1:5900