Update build/README.md for current architecture

apps/rego-tunnel/build/README.md

@@ -4,15 +4,10 @@ This directory contains the Dockerfile and scripts to build the Cisco VPN Docker
 
 ## Files
 
-- `Dockerfile` - Main Docker image definition
-- `cisco-secure-client-full.tar.gz` - Pre-extracted Cisco Secure Client installation
-- `build.sh` - Build script to create the Docker image
-- `scripts/` - Container scripts:
-  - `init-vpn.sh` - Container init (unmounts DNS files for VPN, starts systemd)
-  - `startup-vnc.sh` - VNC/noVNC startup script
-  - `vpn-connect.sh` - VPN automation script (inside container)
-  - `xstartup` - VNC session startup
-  - `vnc.service` - Systemd service for VNC
+- `Dockerfile` - Docker image definition (Ubuntu 22.04 + Cisco Secure Client + noVNC)
+- `cisco-secure-client-full.tar.gz` - Pre-extracted Cisco Secure Client 5.1.14.145
+- `build.sh` - Build and push script
+- `scripts/entrypoint.sh` - Container entrypoint (starts systemd)
 
 ## Building
 
@@ -21,21 +16,36 @@ cd /etc/runtipi/repos/runtipi/apps/rego-tunnel/build
 ./build.sh
 ```
 
-To push to registry:
+This builds and pushes to `git.alexzaw.dev/alexz/cisco-vpn:latest`
+
+To build without pushing:
 ```bash
-docker push git.alexzaw.dev/alexz/cisco-vpn:latest
+docker build -t git.alexzaw.dev/alexz/cisco-vpn:latest .
 ```
 
-## Architecture
+## What's in the image
 
-1. **init-vpn.sh**: Unmounts Docker's bind-mounted `/etc/resolv.conf` and `/etc/hosts` (required for VPN to modify DNS), then starts systemd
-2. **systemd**: Manages vpnagentd (Cisco VPN agent) and vnc (VNC server) services
-3. **xstartup**: Runs when VNC session starts - by default launches vpnui, but can be overridden via volume mount
-4. **vpn-connect.sh**: Optional automation script for auto-login with TOTP
+The Dockerfile creates an image with:
+- Ubuntu 22.04 with systemd
+- Cisco Secure Client 5.1.14.145 (VPN, DART, Posture modules)
+- TigerVNC server + noVNC (web-based VNC)
+- Tools: xdotool, oathtool (for TOTP), xclip, openbox
 
-## Runtime Mounts
+### Systemd services (baked in)
+- `vpnagentd.service` - Cisco VPN agent
+- `vnc.service` - VNC server + noVNC websockify
 
-When running as rego-tunnel app, these are mounted:
-- `/shared` - Contains the `cisco-vpn` script with full automation
-- `/root/.vnc/xstartup` - Custom xstartup that launches terminal with cisco-vpn script
-- `/opt/scripts/init-vpn.sh` - Custom init script with network setup
+### Scripts (baked in via base64 in Dockerfile)
+- `/opt/scripts/startup-vnc.sh` - Starts VNC server and noVNC
+- `/opt/scripts/entrypoint.sh` - Container entrypoint
+
+## Runtime mounts (from shared/)
+
+When running as rego-tunnel app, these are mounted from `shared/`:
+- `/shared/cisco-vpn` - Main VPN automation script
+- `/shared/xstartup` → `/root/.vnc/xstartup` - VNC session startup
+
+## Ports
+
+- `5901` - VNC server
+- `6080` - noVNC web interface