fix: update docs and example compose

Signed-off-by: vajonam <152501+vajonam@users.noreply.github.com>

README.md

@@ -34,7 +34,22 @@ To use a VNC viewer with the container, the default port for X TigerVNC is 5900.
 
 Like other Docker containers, you can pass your Nvidia GPU into the container using the `NVIDIA_VISIBLE_DEVICES` and `NVIDIA_DRIVER_CAPABILITIES` envs. You can define these using the value of `all` or by providing more narrow and specific values. This has only been tested on Nvidia GPUs.
 
-In unraid you can set these values during set up. For containers outside of unraid, you can set this by adding the following params or similar  `-e NVIDIA_DRIVER_CAPABILITIES="all" NVIDIA_VISIBLE_DEVICES="all"`. If using Docker Compose, uncomment the enviroment variables in the relevant docker-compose.yaml file. 
+In unraid you can set these values during set up. For containers outside of unraid, you can set this by adding the following params or similar  `-e NVIDIA_DRIVER_CAPABILITIES="all" NVIDIA_VISIBLE_DEVICES="all"`. If using Docker Compose, uncomment the enviroment variables in the relevant docker-compose.yaml file.
+
+In addtion to the above, to enable HW 3D acceleration (helps with complex models and visualizing the sliced layers), you must pass ane environment variable by adding a `-e ENABLEHWGPU=true` to the docker run command or adding `- ENABLEHWGPU=true` to your docker compose.
+
+### Other Environment Variables
+
+Default values shown below. 
+
+- `DISPLAY=:0` sets the DISPLAY variable, this can be left as 0
+- `VGL_DISPLAY=egl` needed for HW 3D accelration with EGL support on the HOST graphics driver. 
+- `SUPD_LOGLEVEL=INFO` log level for supervisord 
+- `ENABLEHWGPU=true` enable HW 3D Accelaration 
+- `VNC_RESOLUTION=1280x800` resolution of the VNC server
+- `VNC_PASSWORD=(None)` defaults to no VNC password, you can add one here.
+- `NOVNC_PORT=8080` port for the novonc HTML5/web interface.
+- `VNC_PORT=5900` port fo the vnc server, allows direct connections using a VNC client. Note the `DISPLAY` number above is added to the port number, so if your display is :1 then VNC port accepting connections will be `5901`
 
 
 ## Links

docker-compose.yml

@@ -8,9 +8,10 @@ services:
       - SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt
       - NVIDIA_VISIBLE_DEVICES=0
       - NVIDIA_DRIVER_CAPABILITIES=all
-      - DISPLAY=:1
+      - DISPLAY=:0
       - VGL_DISPLAY=egl # needed to run without X server
       - SUPD_LOGLEVEL=INFO 
+      - ENABLEHWGPU=true
       - VNC_RESOLUTION=1920x1080
     volumes:
       - ./prints:/prints/