Update Dockerfile (ultralytics#3792)

Dockerfile

@@ -9,7 +9,8 @@ COPY requirements.txt .
 RUN python -m pip install --upgrade pip
 RUN pip uninstall -y nvidia-tensorboard nvidia-tensorboard-plugin-dlprof
 RUN pip install --no-cache -r requirements.txt coremltools onnx gsutil notebook
-RUN pip install --no-cache torch==1.9.0+cu111 torchvision==0.10.0+cu111 -f https://download.pytorch.org/whl/torch_stable.html
+RUN pip install --no-cache -U torch torchvision numpy
+# RUN pip install --no-cache torch==1.9.0+cu111 torchvision==0.10.0+cu111 -f https://download.pytorch.org/whl/torch_stable.html
 
 # Create working directory
 RUN mkdir -p /usr/src/app