Revert "[ML] Upgrade to Pytorch 2.1.2 and zlib 1.2.13 (elastic#2588)"

This reverts commit 089b4d3.

Author: droberts195

Diff for: .buildkite/pipelines/build_linux.json.py

@@ -36,7 +36,7 @@
       "cpu": "6",
       "ephemeralStorage": "20G",
       "memory": "64G",
-      "image": "docker.elastic.co/ml-dev/ml-linux-build:28"
+      "image": "docker.elastic.co/ml-dev/ml-linux-build:27"
    },
    "aarch64": {
       "provider": "aws",
@@ -100,7 +100,7 @@ def main(args):
               "cpu": "6",
               "ephemeralStorage": "20G",
               "memory": "64G",
-              "image": "docker.elastic.co/ml-dev/ml-linux-aarch64-cross-build:12"
+              "image": "docker.elastic.co/ml-dev/ml-linux-aarch64-cross-build:11"
             },
             "commands": [
               ".buildkite/scripts/steps/build_and_test.sh"

Diff for: .buildkite/pipelines/build_macos.json.py

@@ -82,7 +82,7 @@ def main(args):
           "cpu": "6",
           "ephemeralStorage": "20G",
           "memory": "64G",
-          "image": "docker.elastic.co/ml-dev/ml-macosx-build:18"
+          "image": "docker.elastic.co/ml-dev/ml-macosx-build:17"
         },
         "commands": [
           f'if [[ "{args.action}" == "debug" ]]; then export ML_DEBUG=1; fi',

Diff for: 3rd_party/licenses/pytorch-INFO.csv

@@ -1,2 +1,2 @@
 name,version,revision,url,license,copyright,sourceURL
-PyTorch,2.1.2,a8e7c98cb95ff97bb30a728c6b2a1ce6bff946eb,https://pytorch.org,BSD-3-Clause,,
+PyTorch,1.11.0,bc2c6edaf163b1a1330e37a6e34caf8c553e4755,https://pytorch.org,BSD-3-Clause,,

Diff for: 3rd_party/licenses/zlib-INFO.csv

@@ -1,2 +1,2 @@
 name,version,revision,url,license,copyright,sourceURL
-zlib,1.2.13,04f42ceca40f73e2978b50e93806c2a18c1281fc,http://zlib.net,Zlib,Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler,
+zlib,1.2.12,21767c654d31d2dccdde4330529775c6c5fd5389,http://zlib.net,Zlib,Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler,

Diff for: build-setup/linux.md

@@ -319,7 +319,7 @@ Then copy the shared libraries to the system directory:
 sudo cp /opt/intel/mkl/lib/intel64/libmkl*.so /usr/local/gcc103/lib
 ```
 
-### PyTorch 2.1.2
+### PyTorch 1.13.1
 
 (This step requires a reasonable amount of memory. It failed on a machine with 8GB of RAM. It succeeded on a 16GB machine. You can specify the number of parallel jobs using environment variable MAX_JOBS. Lower number of jobs will reduce memory usage.)
 
@@ -338,7 +338,7 @@ sudo /usr/local/gcc103/bin/python3.10 -m pip install install numpy pyyaml setupt
 Then obtain the PyTorch code:
 
 ```
-git clone --depth=1 --branch=v2.1.2 git@github.com:pytorch/pytorch.git
+git clone --depth=1 --branch=v1.13.1 git@github.com:pytorch/pytorch.git
 cd pytorch
 git submodule sync
 git submodule update --init --recursive
@@ -366,7 +366,7 @@ export USE_MKLDNN=ON
 export USE_QNNPACK=OFF
 export USE_PYTORCH_QNNPACK=OFF
 [ $(uname -m) = x86_64 ] && export USE_XNNPACK=OFF
-export PYTORCH_BUILD_VERSION=2.1.2
+export PYTORCH_BUILD_VERSION=1.13.1
 export PYTORCH_BUILD_NUMBER=1
 /usr/local/gcc103/bin/python3.10 setup.py install
 ```
@@ -380,6 +380,44 @@ sudo cp torch/lib/libtorch_cpu.so /usr/local/gcc103/lib
 sudo cp torch/lib/libc10.so /usr/local/gcc103/lib
 ```
 
+### Intel Extension for PyTorch
+If you are building on x86_64, you can optionally build the Intel Extension for PyTorch (IPEX). This extension provides additional optimizations for Intel CPUs. It is not available for aarch64. IPEX library is required to run PyTorch models quantized using the IPEX backend.
+
+Begin by cloning the IPEX repository:
+
+```bash
+git clone https://github.com/intel/intel-extension-for-pytorch.git
+cd intel-extension-for-pytorch
+git fetch --all
+git checkout v1.13.100+cpu
+git submodule sync
+git submodule update --init --recursive
+git config --global --add safe.directory `pwd`
+```
+
+IPEX expects that PyTorch build directory contains a file `build-version`, which contains the PyTorch version string. This file is not created by the PyTorch build process, so we need to create it manually:
+```bash
+ echo "1.13.1+cpu\n" > ${PYTORCH_SRC_DIR}/torch/build-version
+```
+
+This assumes that you have cloned PyTorch in the directory `${PYTORCH_SRC_DIR}` in the step above. Make sure that this path is correct.
+
+Building IPEX requires a lot of memory. To reduce this requirement, we can patch the IPEX build system to lower the number of parallel processes. We use `sed` to replace the call to `multiprocessing.cpu_count()` with a constant `1` in the file `setup.py`:
+```bash
+sed -i 's/multiprocessing.cpu_count()/1/g' setup.py
+```
+
+Finally, we can build IPEX:
+```bash
+export CC=/usr/local/gcc103/bin/gcc
+export TORCH_VERSION="v1.13.1"
+export TORCH_IPEX_VERSION="1.13.100+cpu"
+/usr/local/gcc103/bin/python3.10 -m pip install -r requirements.txt
+/usr/local/gcc103/bin/python3.10 setup.py clean
+/usr/local/gcc103/bin/python3.10 setup.py build_clib ${PYTORCH_SRC_DIR}/torch
+cp build/Release/packages/intel_extension_for_pytorch/lib/libintel-ext-pt-cpu.so /usr/local/gcc103/lib
+```
+
 ### valgrind
 
 `valgrind` is not required to build the code.  However, since we build `gcc` ourselves, if you want

Diff for: build-setup/macos.md

@@ -130,7 +130,7 @@ Download the graphical installer for Python 3.10.9 from <https://www.python.org/
 
 Install using all the default options.  When the installer completes a Finder window pops up.  Double click the `Install Certificates.command` file in this folder to install the SSL certificates Python needs.
 
-### PyTorch 2.1.2
+### PyTorch 1.13.1
 
 PyTorch requires that certain Python modules are installed.  To install them:
 
@@ -141,7 +141,7 @@ sudo /Library/Frameworks/Python.framework/Versions/3.10/bin/pip3.10 install inst
 Then obtain the PyTorch code:
 
 ```
-git clone --depth=1 --branch=v2.1.2 https://github.com/pytorch/pytorch.git
+git clone --depth=1 --branch=v1.13.1 https://github.com/pytorch/pytorch.git
 cd pytorch
 git submodule sync
 git submodule update --init --recursive
@@ -158,18 +158,6 @@ external processes.
 Edit `tools/setup_helpers/cmake.py` and add `"DNNL_TARGET_ARCH"` to the list
 of environment variables that get passed through to CMake (around line 215).
 
-For compilation on Apple silicon Macs edit `third_party/ideep/include/ideep/utils.hpp`
-and add:
-
-```c++
-inline void to_bytes(bytestring& bytes, const unsigned long arg) {
-  auto as_cstring = reinterpret_cast<const char*>(&arg);
-  bytes.append(as_cstring, sizeof(unsigned long));
-}
-```
-
-at around line 189. This is necessary to resolve a template specialization issue.
-
 Build as follows:
 
 ```
@@ -183,7 +171,7 @@ export USE_MKLDNN=ON
 export USE_QNNPACK=OFF
 export USE_PYTORCH_QNNPACK=OFF
 [ $(uname -m) = x86_64 ] && export USE_XNNPACK=OFF
-export PYTORCH_BUILD_VERSION=2.1.2
+export PYTORCH_BUILD_VERSION=1.13.1
 export PYTORCH_BUILD_NUMBER=1
 /Library/Frameworks/Python.framework/Versions/3.10/bin/python3.10 setup.py install
 ```

Diff for: build-setup/windows.md

@@ -55,7 +55,7 @@ On the "Workloads" page that is displayed after a short while, check "Desktop de
 
 ### Git for Windows
 
-Download `Git-2.42.0.2-64-bit.exe` from <https://github.com/git-for-windows/git/releases/download/v2.42.0.windows.2/Git-2.42.0.2-64-bit.exe>.
+Download `Git-2.16.3-64-bit.exe` from <https://github.com/git-for-windows/git/releases/download/v2.16.3.windows.1>.
 
 Install it using mainly the default options suggested by the installer, but on the feature selection dialog also check "On the desktop" in the "Additional icons" section.
 
@@ -65,25 +65,25 @@ As well as providing a Git implementation, Git for Windows comes with Windows po
 
 ### CMake
 
-CMake version 3.19.2 is the minimum required to build ml-cpp. Download the MSI installer for version 3.23.3 from <https://github.com/Kitware/CMake/releases/download/v3.23.3/cmake-3.23.3-windows-x86_64.msi> (or get a more recent version).
+CMake version 3.19.2 is the minimum required to build ml-cpp. Download the MSI installer for version 3.23.2 from <https://github.com/Kitware/CMake/releases/download/v3.23.2/cmake-3.23.2-win64-x64.msi> (or get a more recent version).
 
 Install it mainly using the default options _except_ on the "Install Options" dialog check "Add CMake to the system PATH for all users".
 
 ### zlib
 
 Whilst it is possible to download a pre-built version of `zlib1.dll`, for consistency we want one that links against the Visual Studio 2019 C runtime library. Therefore it is necessary to build zlib from source.
 
-Download the source code from <http://zlib.net/> - the file is called `zlib1213.zip`. Unzip this file under `C:\tools`, so that you end up with a directory called `C:\tools\zlib-1.2.13`.
+Download the source code from <http://zlib.net/> - the file is called `zlib1212.zip`. Unzip this file under `C:\tools`, so that you end up with a directory called `C:\tools\zlib-1.2.12`.
 
 To build, start a command prompt using Start Menu -&gt; Apps -&gt; Visual Studio 2019 -&gt; x64 Native Tools Command Prompt for VS 2019, then in it type:
 
 ```
-cd \tools\zlib-1.2.13
+cd \tools\zlib-1.2.12
 nmake -f win32/Makefile.msc LOC="-D_WIN32_WINNT=0x0601"
 nmake -f win32/Makefile.msc test
 ```
 
-All the build output will end up in the top level `C:\tools\zlib-1.2.13` directory. Once the build is complete, copy `zlib1.dll` and `minigzip.exe` to `C:\usr\local\bin`. Copy `zlib.lib` and `zdll.lib` to `C:\usr\local\lib`. And copy `zlib.h` and `zconf.h` to `C:\usr\local\include`.
+All the build output will end up in the top level `C:\tools\zlib-1.2.12` directory. Once the build is complete, copy `zlib1.dll` and `minigzip.exe` to `C:\usr\local\bin`. Copy `zlib.lib` and `zdll.lib` to `C:\usr\local\lib`. And copy `zlib.h` and `zconf.h` to `C:\usr\local\include`.
 
 ### libxml2
 
@@ -147,8 +147,8 @@ Start a command prompt using Start Menu -&gt; Apps -&gt; Visual Studio 2019 -&gt
 ```
 cd \tools\boost_1_83_0
 bootstrap.bat
-b2 -j6 --layout=versioned --disable-icu --toolset=msvc-14.2 cxxflags="-std:c++17" linkflags="-std:c++17" --build-type=complete -sZLIB_INCLUDE="C:\tools\zlib-1.2.13" -sZLIB_LIBPATH="C:\tools\zlib-1.2.13" -sZLIB_NAME=zdll --without-context --without-coroutine --without-graph_parallel --without-mpi --without-python architecture=x86 address-model=64 optimization=speed inlining=full define=BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS define=BOOST_LOG_WITHOUT_DEBUG_OUTPUT define=BOOST_LOG_WITHOUT_EVENT_LOG define=BOOST_LOG_WITHOUT_SYSLOG define=BOOST_LOG_WITHOUT_IPC define=_WIN32_WINNT=0x0601
-b2 install --prefix=C:\usr\local --layout=versioned --disable-icu --toolset=msvc-14.2 cxxflags="-std:c++17" linkflags="-std:c++17" --build-type=complete -sZLIB_INCLUDE="C:\tools\zlib-1.2.13" -sZLIB_LIBPATH="C:\tools\zlib-1.2.13" -sZLIB_NAME=zdll --without-context --without-coroutine --without-graph_parallel --without-mpi --without-python architecture=x86 address-model=64 optimization=speed inlining=full define=BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS define=BOOST_LOG_WITHOUT_DEBUG_OUTPUT define=BOOST_LOG_WITHOUT_EVENT_LOG define=BOOST_LOG_WITHOUT_SYSLOG define=BOOST_LOG_WITHOUT_IPC define=_WIN32_WINNT=0x0601
+b2 -j6 --layout=versioned --disable-icu --toolset=msvc-14.2 cxxflags="-std:c++17" linkflags="-std:c++17" --build-type=complete -sZLIB_INCLUDE="C:\tools\zlib-1.2.12" -sZLIB_LIBPATH="C:\tools\zlib-1.2.12" -sZLIB_NAME=zdll --without-context --without-coroutine --without-graph_parallel --without-mpi --without-python architecture=x86 address-model=64 optimization=speed inlining=full define=BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS define=BOOST_LOG_WITHOUT_DEBUG_OUTPUT define=BOOST_LOG_WITHOUT_EVENT_LOG define=BOOST_LOG_WITHOUT_SYSLOG define=BOOST_LOG_WITHOUT_IPC define=_WIN32_WINNT=0x0601
+b2 install --prefix=C:\usr\local --layout=versioned --disable-icu --toolset=msvc-14.2 cxxflags="-std:c++17" linkflags="-std:c++17" --build-type=complete -sZLIB_INCLUDE="C:\tools\zlib-1.2.12" -sZLIB_LIBPATH="C:\tools\zlib-1.2.12" -sZLIB_NAME=zdll --without-context --without-coroutine --without-graph_parallel --without-mpi --without-python architecture=x86 address-model=64 optimization=speed inlining=full define=BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS define=BOOST_LOG_WITHOUT_DEBUG_OUTPUT define=BOOST_LOG_WITHOUT_EVENT_LOG define=BOOST_LOG_WITHOUT_SYSLOG define=BOOST_LOG_WITHOUT_IPC define=_WIN32_WINNT=0x0601
 ```
 
 The Boost headers and appropriate libraries should end up in `C:\usr\local\include` and `C:\usr\local\lib` respectively.
@@ -193,7 +193,7 @@ On the "Advanced Options" screen, check "Install for all users" and "Add Python
 
 For the time being, do not take advantage of the option on the final installer screen to reconfigure the machine to allow paths longer than 260 characters.  We still support Windows versions that do not have this option.
 
-### PyTorch 2.1.2
+### PyTorch 1.13.1
 
 (This step requires a lot of memory. It failed on a machine with 12GB of RAM. It just about fitted on a 20GB machine. 32GB RAM is recommended.)
 
@@ -209,7 +209,7 @@ Next, in a Git bash shell run:
 
 ```
 cd /c/tools
-git clone --depth=1 --branch=v2.1.2 https://github.com/pytorch/pytorch.git
+git clone --depth=1 --branch=v1.13.1 git@github.com:pytorch/pytorch.git
 cd pytorch
 git submodule sync
 git submodule update --init --recursive
@@ -265,7 +265,7 @@ set USE_QNNPACK=OFF
 set USE_PYTORCH_QNNPACK=OFF
 set USE_XNNPACK=OFF
 set MSVC_Z7_OVERRIDE=OFF
-set PYTORCH_BUILD_VERSION=2.1.2
+set PYTORCH_BUILD_VERSION=1.13.1
 set PYTORCH_BUILD_NUMBER=1
 python setup.py install
 ```

Diff for: dev-tools/docker/build_linux_aarch64_cross_build_image.sh

@@ -22,7 +22,7 @@
 HOST=docker.elastic.co
 ACCOUNT=ml-dev
 REPOSITORY=ml-linux-aarch64-cross-build
-VERSION=12
+VERSION=11
 
 set -e
 

Diff for: dev-tools/docker/build_linux_aarch64_native_build_image.sh

@@ -34,7 +34,7 @@ sleep 5
 HOST=docker.elastic.co
 ACCOUNT=ml-dev
 REPOSITORY=ml-linux-aarch64-native-build
-VERSION=12
+VERSION=11
 
 set -e
 

Diff for: dev-tools/docker/build_linux_build_image.sh

@@ -34,7 +34,7 @@ sleep 5
 HOST=docker.elastic.co
 ACCOUNT=ml-dev
 REPOSITORY=ml-linux-build
-VERSION=28
+VERSION=27
 
 set -e
 

Diff for: dev-tools/docker/build_macosx_build_image.sh

@@ -22,7 +22,7 @@
 HOST=docker.elastic.co
 ACCOUNT=ml-dev
 REPOSITORY=ml-macosx-build
-VERSION=18
+VERSION=17
 
 set -e
 

Diff for: dev-tools/docker/linux_aarch64_cross_builder/Dockerfile

@@ -10,7 +10,7 @@
 #
 
 # Increment the version here when a new tools/3rd party components image is built
-FROM docker.elastic.co/ml-dev/ml-linux-aarch64-cross-build:12
+FROM docker.elastic.co/ml-dev/ml-linux-aarch64-cross-build:11
 
 MAINTAINER David Roberts <dave.roberts@elastic.co>
 

Diff for: dev-tools/docker/linux_aarch64_cross_image/Dockerfile

@@ -24,7 +24,7 @@ RUN \
 RUN \
   mkdir -p /usr/local/sysroot-aarch64-linux-gnu/usr && \
   cd /usr/local/sysroot-aarch64-linux-gnu/usr && \
-  wget --quiet -O - https://s3-eu-west-1.amazonaws.com/prelert-artifacts/dependencies/usr-aarch64-linux-gnu-12.tar.bz2 | tar jxf - && \
+  wget --quiet -O - https://s3-eu-west-1.amazonaws.com/prelert-artifacts/dependencies/usr-aarch64-linux-gnu-11.tar.bz2 | tar jxf - && \
   cd .. && \
   ln -s usr/lib lib && \
   ln -s usr/lib64 lib64

Diff for: dev-tools/docker/linux_aarch64_native_builder/Dockerfile

@@ -10,7 +10,7 @@
 #
 
 # Increment the version here when a new tools/3rd party components image is built
-FROM docker.elastic.co/ml-dev/ml-linux-aarch64-native-build:12
+FROM docker.elastic.co/ml-dev/ml-linux-aarch64-native-build:11
 
 MAINTAINER David Roberts <dave.roberts@elastic.co>
 

Diff for: dev-tools/docker/linux_aarch64_native_image/Dockerfile

@@ -138,7 +138,7 @@ RUN \
 # If the PyTorch branch is changed also update PYTORCH_BUILD_VERSION
 RUN \
   cd ${build_dir} && \
-  git -c advice.detachedHead=false clone --depth=1 --branch=v2.1.2 https://github.com/pytorch/pytorch.git && \
+  git -c advice.detachedHead=false clone --depth=1 --branch=v1.13.1 https://github.com/pytorch/pytorch.git && \
   cd pytorch && \
   git submodule sync && \
   git submodule update --init --recursive && \
@@ -151,7 +151,7 @@ RUN \
   export USE_MKLDNN=ON && \
   export USE_QNNPACK=OFF && \
   export USE_PYTORCH_QNNPACK=OFF && \
-  export PYTORCH_BUILD_VERSION=2.1.2 && \
+  export PYTORCH_BUILD_VERSION=1.13.1 && \
   export PYTORCH_BUILD_NUMBER=1 && \
   /usr/local/bin/python3.10 setup.py install && \
   mkdir /usr/local/gcc103/include/pytorch && \

Diff for: dev-tools/docker/linux_aarch64_native_tester/Dockerfile

@@ -10,7 +10,7 @@
 #
 
 # Increment the version here when a new tools/3rd party components image is built
-FROM docker.elastic.co/ml-dev/ml-linux-aarch64-native-build:12
+FROM docker.elastic.co/ml-dev/ml-linux-aarch64-native-build:11
 
 MAINTAINER David Roberts <dave.roberts@elastic.co>
 

Diff for: dev-tools/docker/linux_builder/Dockerfile

@@ -10,7 +10,7 @@
 #
 
 # Increment the version here when a new tools/3rd party components image is built
-FROM docker.elastic.co/ml-dev/ml-linux-build:28
+FROM docker.elastic.co/ml-dev/ml-linux-build:27
 
 MAINTAINER David Roberts <dave.roberts@elastic.co>
 

Diff for: dev-tools/docker/linux_image/Dockerfile

@@ -145,11 +145,12 @@ RUN \
 # If the PyTorch branch is changed also update PYTORCH_BUILD_VERSION
 RUN \
   cd ${build_dir} && \
-  git -c advice.detachedHead=false clone --depth=1 --branch=v2.1.2 https://github.com/pytorch/pytorch.git && \
+  git -c advice.detachedHead=false clone --depth=1 --branch=v1.13.1 https://github.com/pytorch/pytorch.git && \
   cd pytorch && \
   git submodule sync && \
   git submodule update --init --recursive && \
   sed -i -e 's/system(/strlen(/' torch/csrc/jit/codegen/fuser/cpu/fused_kernel.cpp && \
+  cd ${build_dir}/pytorch && \
   export BLAS=MKL && \
   export BUILD_TEST=OFF && \
   export BUILD_CAFFE2=OFF && \
@@ -159,16 +160,37 @@ RUN \
   export USE_QNNPACK=OFF && \
   export USE_PYTORCH_QNNPACK=OFF && \
   export USE_XNNPACK=OFF && \
-  export PYTORCH_BUILD_VERSION=2.1.2 && \
+  export PYTORCH_BUILD_VERSION=1.13.1 && \
   export PYTORCH_BUILD_NUMBER=1 && \
   export MAX_JOBS=10 && \
   /usr/local/bin/python3.10 setup.py install && \
+  cd ${build_dir} && \
+  git clone https://github.com/intel/intel-extension-for-pytorch.git && \
+  cd intel-extension-for-pytorch && \
+  git fetch --all && \
+  git checkout v1.13.100+cpu && \
+  git submodule sync && \
+  git submodule update --init --recursive && \
+  git config --global --add safe.directory `pwd` && \
+  /usr/local/bin/python3.10 -m pip install -r requirements.txt && \
+  /usr/local/bin/python3.10 setup.py clean && \
+  echo "1.13.1+cpu\n" > ${build_dir}/pytorch/torch/build-version && \
+  export  CC=/usr/local/gcc103/bin/gcc  && \
+  export TORCH_VERSION="v1.13.1" && \
+  export TORCH_IPEX_VERSION="1.13.100+cpu" && \
+  # building ipex is memory hungry, so we need to limit the number of jobs
+  sed -i 's/multiprocessing.cpu_count()/1/g' setup.py && \
+  /usr/local/bin/python3.10 setup.py build_clib ${build_dir}/pytorch/torch && \
+  cd ${build_dir}/pytorch && \
   mkdir /usr/local/gcc103/include/pytorch && \
   cp -r torch/include/* /usr/local/gcc103/include/pytorch/ && \
   cp torch/lib/libtorch_cpu.so /usr/local/gcc103/lib && \
   cp torch/lib/libc10.so /usr/local/gcc103/lib && \
+  cp ${build_dir}/intel-extension-for-pytorch/build/Release/packages/intel_extension_for_pytorch/lib/libintel-ext-pt-cpu.so /usr/local/gcc103/lib && \
   cd .. && \
-  rm -rf pytorch
+  rm -rf pytorch && \
+  rm -rf intel-extension-for-pytorch
+
 
 FROM centos:7
 COPY --from=builder /usr/local/gcc103 /usr/local/gcc103

Diff for: dev-tools/docker/linux_tester/Dockerfile

@@ -10,7 +10,7 @@
 #
 
 # Increment the version here when a new tools/3rd party components image is built
-FROM docker.elastic.co/ml-dev/ml-linux-build:28
+FROM docker.elastic.co/ml-dev/ml-linux-build:27
 
 MAINTAINER David Roberts <dave.roberts@elastic.co>