Moved onnx build to main dockerfile.

README.md

@@ -21,6 +21,24 @@ Fast triangulation of multiple persons from multiple camera views.
     cd RapidPoseTriangulation/
     ```
 
+- Enable gpu-access while building docker images:
+  ```bash
+  # Open file:
+  sudo nano /etc/docker/daemon.json
+  # Add:
+  {
+    "default-runtime": "nvidia",
+    "runtimes": {
+      "nvidia": {
+        "path": "nvidia-container-runtime",
+        "runtimeArgs": []
+      }
+    }
+  }
+  # Restart docker
+  sudo systemctl restart docker
+  ```
+
 - Build docker container:
   ```bash
   docker build --progress=plain -t rapidposetriangulation .