Exporting onnx instructions.

extras/mmdeploy/dockerfile

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+FROM openmmlab/mmdeploy:ubuntu20.04-cuda11.8-mmdeploy1.3.1
+
+ARG DEBIAN_FRONTEND=noninteractive
+ENV LANG=C.UTF-8
+ENV LC_ALL=C.UTF-8
+WORKDIR /
+
+RUN apt-get update && apt-get install -y --no-install-recommends feh
+
+RUN git clone https://github.com/open-mmlab/mmdeploy.git --depth=1
+RUN cd mmdeploy/; python3 tools/scripts/build_ubuntu_x64_ort.py
+
+# Install MMPose
+ENV FORCE_CUDA="1"
+ENV MMCV_WITH_OPS=1
+RUN pip3 install --upgrade --no-cache-dir openmim
+RUN mim install mmengine
+RUN mim install "mmcv>=2,<2.2.0"
+RUN mim install "mmdet>=3"
+RUN mim install "mmpose>=1.1.0"
+# Fix an error when importing mmpose
+RUN pip3 install --upgrade --no-cache-dir "numpy<2" scipy
+RUN git clone --depth=1 --branch=main https://github.com/open-mmlab/mmpose.git
+
+RUN echo 'export PYTHONPATH=/mmdeploy/build/lib:$PYTHONPATH' >> ~/.bashrc
+RUN echo 'export LD_LIBRARY_PATH=/mmdeploy/../mmdeploy-dep/onnxruntime-linux-x64-1.8.1/lib/:$LD_LIBRARY_PATH' >> ~/.bashrc
+
+# Show images
+RUN apt-get update && apt-get install -y --no-install-recommends python3-tk
+
+WORKDIR /mmdeploy/
+CMD ["/bin/bash"]