Update Dockerfile

Author: mc-nv

tools/gen_ort_dockerfile.py

@@ -367,10 +367,8 @@ def dockerfile_for_linux(output_file):
 # Copy all artifacts needed by the backend to /opt/onnxruntime
 #
 WORKDIR /opt/onnxruntime
-
-RUN mkdir -p /opt/onnxruntime && \
-    cp /workspace/onnxruntime/LICENSE /opt/onnxruntime && \
-    cat /workspace/onnxruntime/cmake/external/onnx/VERSION_NUMBER > /opt/onnxruntime/ort_onnx_version.txt
+RUN cp /workspace/onnxruntime/LICENSE . \\
+    && cat /workspace/onnxruntime/cmake/external/onnx/VERSION_NUMBER > ort_onnx_version.txt
 
 # ONNX Runtime headers, libraries and binaries
 WORKDIR /opt/onnxruntime/include