add dockerfile and readme on how win docker builder is generated

scripts/docker_pyinstaller/Dockerfile

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+FROM 32bit/ubuntu:16.04
+
+ENV DEBIAN_FRONTEND noninteractive
+
+#ARG WINE_VERSION=winehq-staging
+COPY wine_3.20.1-1_i386.deb /wine_3.20.1-1_i386.deb
+
+ARG PYTHON_VERSION=3.7.1
+ARG PYINSTALLER_VERSION=3.4
+
+# we need wine for this all to work, so we'll use the PPA
+RUN set -x \
+##    && dpkg --add-architecture i386 \
+    && dpkg -i /wine_3.20.1-1_i386.deb \
+    && apt-get update -qy \
+    && apt-get install --no-install-recommends -qfy apt-transport-https software-properties-common wget \
+    && wget -nv https://dl.winehq.org/wine-builds/Release.key \
+    && apt-key add Release.key \
+    && add-apt-repository 'https://dl.winehq.org/wine-builds/ubuntu/' \
+    && apt-get update -qy \
+#    && apt-get install --no-install-recommends -qfy $WINE_VERSION winbind cabextract \
+    && apt-get install --no-install-recommends -qfy winbind cabextract \
+    && apt-get clean \
+    && wget -nv https://raw.githubusercontent.com/Winetricks/winetricks/master/src/winetricks \
+    && chmod +x winetricks \
+    && mv winetricks /usr/local/bin
+
+# wine settings
+ENV WINEARCH win32
+ENV WINEDEBUG fixme-all
+ENV WINEPREFIX /wine
+
+# PYPI repository location
+ENV PYPI_URL=https://pypi.python.org/
+# PYPI index location
+ENV PYPI_INDEX_URL=https://pypi.python.org/simple
+
+# install python in wine, using the msi packages to install, extracting
+# the files directly, since installing isn't running correctly.
+RUN set -x \
+    && winetricks win7 \
+    && for msifile in `echo core dev exe lib path pip tcltk tools`; do \
+        wget -nv "https://www.python.org/ftp/python/$PYTHON_VERSION/win32/${msifile}.msi"; \
+        wine msiexec /i "${msifile}.msi" /qb TARGETDIR=C:/Python37; \
+        rm ${msifile}.msi; \
+    done \
+    && cd /wine/drive_c/Python37 \
+    && echo 'wine '\''C:\Python37\python.exe'\'' "$@"' > /usr/bin/python \
+    && echo 'wine '\''C:\Python37\Scripts\easy_install.exe'\'' "$@"' > /usr/bin/easy_install \
+    && echo 'wine '\''C:\Python37\Scripts\pip.exe'\'' "$@"' > /usr/bin/pip \
+    && echo 'wine '\''C:\Python37\Scripts\pyinstaller.exe'\'' "$@"' > /usr/bin/pyinstaller \
+    && echo 'wine '\''C:\Python37\Scripts\pyupdater.exe'\'' "$@"' > /usr/bin/pyupdater \
+    && echo 'assoc .py=PythonScript' | wine cmd \
+    && echo 'ftype PythonScript=c:\Python37\python.exe "%1" %*' | wine cmd \
+    && while pgrep wineserver >/dev/null; do echo "Waiting for wineserver"; sleep 1; done \
+    && chmod +x /usr/bin/python /usr/bin/easy_install /usr/bin/pip /usr/bin/pyinstaller /usr/bin/pyupdater \
+    && (pip install -U pip || true) \
+    && rm -rf /tmp/.wine-*
+
+ENV W_DRIVE_C=/wine/drive_c
+ENV W_WINDIR_UNIX="$W_DRIVE_C/windows"
+ENV W_SYSTEM_DLLS="$W_WINDIR_UNIX/system32"
+ENV W_TMP="$W_DRIVE_C/windows/temp/_$0"
+
+# install Microsoft Visual C++ Redistributable for Visual Studio 2017 dll files
+RUN set -x \
+    && rm -f "$W_TMP"/* \
+    && wget -P "$W_TMP" https://download.visualstudio.microsoft.com/download/pr/11687613/88b50ce70017bf10f2d56d60fcba6ab1/VC_redist.x86.exe \
+    && cabextract -q --directory="$W_TMP" "$W_TMP"/VC_redist.x86.exe \
+    && cabextract -q --directory="$W_TMP" "$W_TMP/a10" \
+    && cabextract -q --directory="$W_TMP" "$W_TMP/a11" \
+    && cd "$W_TMP" \
+    && rename 's/_/\-/g' *.dll \
+    && cp "$W_TMP"/*.dll "$W_SYSTEM_DLLS"/
+
+# put the src folder inside wine
+RUN mkdir /src/ && ln -s /src /wine/drive_c/src
+VOLUME /src/
+WORKDIR /wine/drive_c/src/
+RUN mkdir -p /wine/drive_c/tmp
+
+RUN pip install pyinstaller==$PYINSTALLER_VERSION
+
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]

scripts/docker_pyinstaller/README.md

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+# PyInstaller docker image fork used on build process
+
+This is a temporary fork of [docker-pyinstaller](https://github.com/cdrx/docker-pyinstaller/tree/master/win32/py3) that uses [zzhiyi's fork of wine](https://github.com/zzhiyi/wine/tree/kernelbase/PathCchCanonicalizeEx) to build with Python 3.7.1 and PyInstaller 3.4.
+Once those changes settles both in wine and docker-pyinstaller repo, this folder should be removed.
+
+## But hey, where is `wine_3.20.1-1_i386.deb` and how was it generated?
+It's a package generated out of above mentioned wine branch. You can find instructions on how to generate Debian packages on the [Wine Wiki](https://wiki.winehq.org/Building_Biarch_Wine_On_Ubuntu) or use a helper like [docker-wine-builder](https://github.com/shyba/docker-wine-builder).

scripts/docker_pyinstaller/entrypoint.sh

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+#!/bin/bash
+
+# Fail on errors.
+set -e
+
+#
+# In case the user specified a custom URL for PYPI, then use
+# that one, instead of the default one.
+#
+if [[ "$PYPI_URL" != "https://pypi.python.org/" ]] || \
+   [[ "$PYPI_INDEX_URL" != "https://pypi.python.org/simple" ]]; then
+    # the funky looking regexp just extracts the hostname, excluding port
+    # to be used as a trusted-host.
+    mkdir -p /wine/drive_c/users/root/pip
+    echo "[global]" > /wine/drive_c/users/root/pip/pip.ini
+    echo "index = $PYPI_URL" >> /wine/drive_c/users/root/pip/pip.ini
+    echo "index-url = $PYPI_INDEX_URL" >> /wine/drive_c/users/root/pip/pip.ini
+    echo "trusted-host = $(echo $PYPI_URL | perl -pe 's|^.*?://(.*?)(:.*?)?/.*$|$1|')" >> /wine/drive_c/users/root/pip/pip.ini
+
+    echo "Using custom pip.ini: "
+    cat /wine/drive_c/users/root/pip/pip.ini
+fi
+
+cd /src
+
+if [ -f requirements.txt ]; then
+    pip install -r requirements.txt
+fi # [ -f requirements.txt ]
+
+echo "$@"
+
+if [[ "$@" == "" ]]; then
+    pyinstaller --clean -y --dist ./dist/windows --workpath /tmp *.spec
+    chown -R --reference=. ./dist/windows
+else
+    sh -c "$@"
+fi # [[ "$@" == "" ]]