Add kmod package and call load_tun.sh before vpnagentd

apps/rego-tunnel-linux/source/Dockerfile

@@ -5,7 +5,7 @@ ENV container=docker
 # Install systemd and required packages
 RUN apt-get update && apt-get install -y \
     systemd systemd-sysv dbus dbus-x11 \
-    iproute2 iptables ca-certificates \
+    iproute2 iptables ca-certificates kmod \
     curl wget openssh-client \
     x11vnc xvfb fluxbox novnc websockify xterm nano oathtool \
     xauth libnss3 libatk1.0-0 libatk-bridge2.0-0 \

apps/rego-tunnel-linux/source/entrypoint.sh

@@ -37,6 +37,8 @@ start_gui() {
 }
 
 start_vpnagent() {
+  # Load TUN module if needed
+  /opt/cisco/secureclient/bin/load_tun.sh 2>/dev/null || true
   # Start Cisco VPN agent daemon
   /opt/cisco/secureclient/bin/vpnagentd &
   pids+=($!)