Switch to Python 3

Make /usr/bin/env python resolve to python3.
Install the latest version of pip in the context of python3.

See https://gitlab.com/gitlab-org/gitlab-ee/issues/6783

1 files changed, 25 insertions, 2 deletions

diff --git a/Dockerfile b/Dockerfile
index 359fef3..900019b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,12 +15,35 @@ RUN cd /tmp && \
 
 RUN npm install npm-install-peers cheerio
 
-# Don't let Rubygem fail with the numerous projects using PG or MySQL, install realpath
-RUN apt-get update && apt-get install -y libpq-dev libmysqlclient-dev realpath && rm -rf /var/lib/apt/lists/*
+# Don't let Rubygem fail with the numerous projects using PG or MySQL,
+# install realpath, includes for python3, and pip for python3
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    libpq-dev libmysqlclient-dev realpath python3-dev python3-pip && \
+    rm -rf /var/lib/apt/lists/*
 
 # Don't load RVM automatically, it doesn't work with GitLab-CI
 RUN mv /etc/profile.d/rvm.sh /rvm.sh
 
+# Warning! Environment variable PIP_VERSION causes the upgrade of pip to fail.
+ARG VERSION_OF_PIP=19.1.1
+ENV VERSION_OF_PIP $VERSION_OF_PIP
+
+ARG SETUPTOOLS_VERSION=41.0.1
+ENV SETUPTOOLS_VERSION $SETUPTOOLS_VERSION
+
+ARG LOCAL_PYPI_INDEX=/pypi
+ENV LOCAL_PYPI_INDEX $LOCAL_PYPI_INDEX
+
+# Install setuptools, and fetch a recent version pip to be installed later on
+RUN pip3 install --disable-pip-version-check setuptools==$SETUPTOOLS_VERSION && \
+    mkdir $LOCAL_PYPI_INDEX && \
+    wget -q -O $LOCAL_PYPI_INDEX/pip-$VERSION_OF_PIP.tar.gz https://files.pythonhosted.org/packages/93/ab/f86b61bef7ab14909bd7ec3cd2178feb0a1c86d451bc9bccd5a1aedcde5f/pip-$VERSION_OF_PIP.tar.gz
+
+# Version of Python, defaults to Python 2.7
+ARG LM_PYTHON_VERSION
+ENV LM_PYTHON_VERSION ${LM_PYTHON_VERSION:-2.7}
+
 COPY test /test
 COPY run.sh html2json.js /