feat: Add option to specify Python distribution

- Add support for pyenv in Docker file, allowing specification of a
custom Python version
- Update WORKSPACE files to automatically synchronize regardless of
Python version choice, using symbolic links
- Update dependencies accordingly
- Add documentation for changing the base image of the Docker container

docker/Dockerfile

@@ -7,21 +7,30 @@ RUN test -n "$TENSORRT_VERSION" || (echo "No tensorrt version specified, please
 ARG CUDNN_VERSION
 RUN test -n "$CUDNN_VERSION" || (echo "No cudnn version specified, please use --build-arg CUDNN_VERSION=x.y.z to specify a version." && exit 1)
 
+ARG PYTHON_VERSION=3.10
+ENV PYTHON_VERSION=${PYTHON_VERSION}
+
 ARG USE_CXX11_ABI
 ENV USE_CXX11=${USE_CXX11_ABI}
 ENV DEBIAN_FRONTEND=noninteractive
 
 # Install basic dependencies
 RUN apt-get update
-RUN apt install -y build-essential manpages-dev wget zlib1g software-properties-common git
-RUN add-apt-repository ppa:deadsnakes/ppa
-RUN apt install -y python3.8 python3.8-distutils python3.8-dev
-RUN wget https://bootstrap.pypa.io/get-pip.py
-RUN ln -s /usr/bin/python3.8 /usr/bin/python
-RUN python get-pip.py
-RUN pip3 install wheel
-
-# Install CUDNN + TensorRT
+RUN apt install -y build-essential manpages-dev wget zlib1g software-properties-common git libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget ca-certificates curl llvm libncurses5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev mecab-ipadic-utf8
+
+# Install PyEnv and desired Python version
+ENV HOME="/root"
+ENV PYENV_DIR="$HOME/.pyenv"
+ENV PATH="$PYENV_DIR/shims:$PYENV_DIR/bin:$PATH"
+RUN wget -L https://github.com/pyenv/pyenv-installer/raw/master/bin/pyenv-installer &&\
+    chmod 755 pyenv-installer &&\
+    bash pyenv-installer &&\
+    eval "$(pyenv init -)"
+
+RUN pyenv install -v ${PYTHON_VERSION}
+RUN pyenv global ${PYTHON_VERSION}
+
+# Install CUDNN + TensorRT + dependencies
 RUN wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/cuda-ubuntu2204.pin
 RUN mv cuda-ubuntu2204.pin /etc/apt/preferences.d/cuda-repository-pin-600
 RUN apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/7fa2af80.pub
@@ -37,9 +46,9 @@ RUN apt-get update
 
 RUN apt-get install -y libnvinfer8=${TENSORRT_VERSION}* libnvinfer-plugin8=${TENSORRT_VERSION}* libnvinfer-dev=${TENSORRT_VERSION}* libnvinfer-plugin-dev=${TENSORRT_VERSION}* libnvonnxparsers8=${TENSORRT_VERSION}-1* libnvonnxparsers-dev=${TENSORRT_VERSION}-1* libnvparsers8=${TENSORRT_VERSION}-1*  libnvparsers-dev=${TENSORRT_VERSION}-1*
 
-# Setup Bazel
-RUN wget -q https://github.com/bazelbuild/bazelisk/releases/download/v1.16.0/bazelisk-linux-amd64 -O /usr/bin/bazel \
- && chmod a+x /usr/bin/bazel
+# Setup Bazel via Bazelisk
+RUN wget -q https://github.com/bazelbuild/bazelisk/releases/download/v1.16.0/bazelisk-linux-amd64 -O /usr/bin/bazel &&\
+    chmod a+x /usr/bin/bazel
 
 # Build Torch-TensorRT in an auxillary container
 FROM base as torch-tensorrt-builder-base
@@ -50,16 +59,22 @@ ARG TARGETARCH="amd64"
 RUN apt-get install -y python3-setuptools
 RUN apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/3bf863cc.pub
 
-RUN apt-get update && apt-get install -y --no-install-recommends locales ninja-build && rm -rf /var/lib/apt/lists/* && locale-gen en_US.UTF-8
+RUN apt-get update &&\
+    apt-get install -y --no-install-recommends locales ninja-build &&\
+    rm -rf /var/lib/apt/lists/* &&\
+    locale-gen en_US.UTF-8
 
 FROM torch-tensorrt-builder-base as torch-tensorrt-builder
 
 COPY . /workspace/torch_tensorrt/src
 WORKDIR /workspace/torch_tensorrt/src
 RUN cp ./docker/WORKSPACE.docker WORKSPACE
 
+# Symlink the path pyenv is using for python with the /usr/local/lib/ for package sourcing
+RUN ln -s "`pyenv which python | xargs dirname | xargs dirname`/lib/python$PYTHON_VERSION/site-packages" "/opt"
+
 # This script builds both libtorchtrt bin/lib/include tarball and the Python wheel, in dist/
-RUN ./docker/dist-build.sh
+RUN bash ./docker/dist-build.sh
 
 # Copy and install Torch-TRT into the main container
 FROM base as torch-tensorrt
@@ -70,10 +85,11 @@ COPY --from=torch-tensorrt-builder  /workspace/torch_tensorrt/src/py/dist/ .
 RUN cp /opt/torch_tensorrt/docker/WORKSPACE.docker /opt/torch_tensorrt/WORKSPACE
 RUN pip install -r /opt/torch_tensorrt/py/requirements.txt
 RUN pip install tensorrt==${TENSORRT_VERSION}.*
-RUN pip3 install *.whl && rm -fr /workspace/torch_tensorrt/py/dist/* *.whl
+RUN pip install *.whl && rm -fr /workspace/torch_tensorrt/py/dist/* *.whl
 
 WORKDIR /opt/torch_tensorrt
-ENV LD_LIBRARY_PATH /usr/local/lib/python3.8/dist-packages/torch/lib:/usr/local/lib/python3.8/dist-packages/torch_tensorrt/lib:/usr/lib/x86_64-linux-gnu:${LD_LIBRARY_PATH}
-ENV PATH /usr/local/lib/python3.8/dist-packages/torch_tensorrt/bin:${PATH}
+
+ENV LD_LIBRARY_PATH /opt/site-packages/torch/lib:/opt/site-packages/torch_tensorrt/lib:/usr/lib/x86_64-linux-gnu:${LD_LIBRARY_PATH}
+ENV PATH /opt/site-packages/torch_tensorrt/bin:${PATH}
 
 CMD /bin/bash

docker/README.md

@@ -2,7 +2,9 @@
 
 * Use `Dockerfile` to build a container which provides the exact development environment that our master branch is usually tested against.
 
-* The `Dockerfile` currently uses <a href="https://github.com/bazelbuild/bazelisk">Bazelisk</a> to select the Bazel version, and uses the exact library versions of Torch and CUDA listed in <a href="https://github.com/pytorch/TensorRT#dependencies">dependencies</a>. The desired versions of CUDNN and TensorRT must be specified as build-args, with major, minor, and patch versions as in: `--build-arg TENSORRT_VERSION=a.b.c --build-arg CUDNN_VERSION=x.y.z`
+* The `Dockerfile` currently uses <a href="https://github.com/bazelbuild/bazelisk">Bazelisk</a> to select the Bazel version, and uses the exact library versions of Torch and CUDA listed in <a href="https://github.com/pytorch/TensorRT#dependencies">dependencies</a>.
+  * The desired versions of CUDNN and TensorRT must be specified as build-args, with major, minor, and patch versions as in: `--build-arg TENSORRT_VERSION=a.b.c --build-arg CUDNN_VERSION=x.y.z`
+  * The desired base image be changed by explicitly setting a base image, as in `--build-arg BASE_IMG=nvidia/cuda:11.7.1-devel-ubuntu22.04`, though this is optional
 
 * This `Dockerfile` installs `pre-cxx11-abi` versions of Pytorch and builds Torch-TRT using `pre-cxx11-abi` libtorch as well.
 

docker/WORKSPACE.docker

@@ -50,13 +50,13 @@ new_local_repository(
 
 new_local_repository(
     name = "libtorch",
-    path = "/usr/local/lib/python3.8/dist-packages/torch/",
+    path = "/opt/site-packages/torch/",
     build_file = "third_party/libtorch/BUILD"
 )
 
 new_local_repository(
     name = "libtorch_pre_cxx11_abi",
-    path = "/usr/local/lib/python3.8/dist-packages/torch/",
+    path = "/opt/site-packages/torch/",
     build_file = "third_party/libtorch/BUILD"
 )
 

docker/WORKSPACE.ngc

@@ -33,7 +33,7 @@ git_repository(
 # This is currently used in pytorch NGC container CI testing.
 local_repository(
     name = "torch_tensorrt",
-    path = "/usr/local/lib/python3.8/dist-packages/torch_tensorrt"
+    path = "/usr/local/lib/python/site-packages/torch_tensorrt/"
 )
 
 # CUDA should be installed on the system locally
@@ -55,13 +55,13 @@ new_local_repository(
 
 new_local_repository(
     name = "libtorch",
-    path = "/usr/local/lib/python3.8/dist-packages/torch",
+    path = "/opt/site-packages/torch/",
     build_file = "third_party/libtorch/BUILD"
 )
 
 new_local_repository(
     name = "libtorch_pre_cxx11_abi",
-    path = "/usr/local/lib/python3.8/dist-packages/torch",
+    path = "/opt/site-packages/torch/",
     build_file = "third_party/libtorch/BUILD"
 )
 

docker/dist-build.sh

@@ -3,16 +3,20 @@
 TOP_DIR=$(cd $(dirname $0); pwd)/..
 
 if [[ -z "${USE_CXX11}" ]]; then
-    BUILD_CMD="python setup.py bdist_wheel"
+    BUILD_CMD="python3 setup.py bdist_wheel"
 else
-    BUILD_CMD="python setup.py bdist_wheel  --use-cxx11-abi"
+    BUILD_CMD="python3 setup.py bdist_wheel  --use-cxx11-abi"
 fi
 
 cd ${TOP_DIR} \
     && mkdir -p dist && cd py \
-    && pip install -r requirements.txt \
-    && MAX_JOBS=1 LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 \
-        ${BUILD_CMD} $* || exit 1
+    && pip install -r requirements.txt
+
+# Symlink the path pyenv is using for python with the /usr/local/lib/ for package sourcing
+ln -s "`pyenv which python | xargs dirname | xargs dirname`/lib/python$PYTHON_VERSION/site-packages" "/opt"
+
+# Build Torch-TRT
+MAX_JOBS=1 LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8 ${BUILD_CMD} $* || exit 1
 
 pip3 install ipywidgets --trusted-host pypi.org --trusted-host pypi.python.org --trusted-host=files.pythonhosted.org
 jupyter nbextension enable --py widgetsnbextension