Update Dockerfile.gpu (#131)

Author: fededosreis

docker/1.2.0/py3/Dockerfile.gpu

@@ -143,7 +143,7 @@ COPY src/sagemaker_pytorch_container/deep_learning_container.py /usr/local/bin/d
 RUN chmod +x /usr/local/bin/start_with_right_hostname.sh
 RUN chmod +x /usr/local/bin/deep_learning_container.py
 
-COPY sagemaker_pytorch_container-1.2-py2.py3-none-any.whl /sagemaker_pytorch_container-1.2-py2.py3-none-any.whl
+COPY dist/sagemaker_pytorch_container-1.2-py2.py3-none-any.whl /sagemaker_pytorch_container-1.2-py2.py3-none-any.whl
 RUN pip install --no-cache-dir /sagemaker_pytorch_container-1.2-py2.py3-none-any.whl && \
     rm /sagemaker_pytorch_container-1.2-py2.py3-none-any.whl