Update README with pull-based workflow

Replaces build-from-source instructions with docker pull from the Gitea
registry, since the image is now built automatically by Gitea Actions.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -4,45 +4,35 @@ Docker container wrapper for the NOTECONS02 USB Crash Cart Adapter software.
 
 The vendor software (`usb-crash-cart-adapter` v20240517) was built against Ubuntu 16.04
 (Python 2.7, wxWidgets 2.9/GTK2) and is incompatible with modern Fedora. This repo runs
-it inside an Ubuntu 16.04 container with X11 passthrough.
+it inside an Ubuntu 16.04 container with X11/XWayland passthrough.
 
-## Setup
+## New host setup (one-time)
 
-### 1. Install udev rules (once, on the host)
+Clone the repo and install the udev rules so the crash cart adapter is accessible without root:
 
 ```bash
+git clone git@git.sdgarren.com:scott/usb-crash-cart.git
+cd usb-crash-cart
 sudo ./install-udev-rules.sh
 ```
 
-This allows the crash cart adapter (USB vendor `152a`, products `8460`/`8463`) to be
-accessed without root.
+Reconnect the adapter if it was already plugged in.
 
-### 2. Place the .deb package
+## Running
 
-Copy the vendor `.deb` to `packages/crash-cart.deb`:
-
-```bash
-cp /path/to/"Linux-X64 Crash Cart Software_1240415.deb" packages/crash-cart.deb
-```
-
-### 3. Build the image
-
-```bash
-docker build -t usb-crash-cart .
-```
-
-### 4. Run
+Pull the pre-built image from the Gitea registry and launch:
 
 ```bash
+docker pull git.sdgarren.com/scott/usb-crash-cart:latest
 ./docker-run.sh
 ```
 
-This handles X11 socket sharing and USB device passthrough automatically.
+`docker-run.sh` handles X11/XWayland socket sharing and USB device passthrough automatically.
 
 ## Notes
 
-- The container uses `ubuntu:16.04` to match the build environment.
+- The container uses `ubuntu:16.04` to match the original build environment.
 - The app bundles its own `libpython2.7`, `libwx_gtk2u-2.9`, `libpng12`, etc. — the
   container only needs GTK2 and X11 system libs from the OS.
-- `LD_LIBRARY_PATH` is set to prefer the bundled libs over system ones.
-- The `.deb` is excluded from git (`.gitignore`) — obtain it from the vendor package.
+- On Fedora with Wayland, XWayland provides X11 compatibility — no extra configuration needed.
+- The Docker image is built automatically by Gitea Actions on every push to `main`.