FoundationDB and Python3 together in the one Docker container

Dockerfile

FROM foundationdb:ubuntu-18.04

# for the moment it is not published
# current version in preview here:
# https://github.com/apple/foundationdb/pull/355

ENV PATH /usr/local/bin:$PATH

# http://bugs.python.org/issue19846
# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
ENV LANG C.UTF-8


ENV GPG_KEY 0D96DF4D4110E5C43FBFB17F2D347EA6AA65421D
ENV PYTHON_VERSION 3.6.5


RUN apt-get update && apt-get install -y --no-install-recommends \
    ca-certificates \
 		python3-distutils \
 		wget \
    && rm -rf /var/lib/apt/lists/*

# make some useful symlinks that are expected to exist
RUN cd /usr/local/bin \
	&& ln -s idle3 idle \
	&& ln -s pydoc3 pydoc \
	&& rm /usr/bin/python \
	&& ln -s python3.6 /usr/bin/python \
	&& ln -s python3-config python-config

# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"
ENV PYTHON_PIP_VERSION 10.0.1

RUN set -ex; \
	\
	wget -O get-pip.py 'https://bootstrap.pypa.io/get-pip.py'; \
	\
	python get-pip.py \
		--disable-pip-version-check \
		--no-cache-dir \
		"pip==$PYTHON_PIP_VERSION" \
	; \
	pip --version; \
	\
	find /usr/local -depth \
		\( \
			\( -type d -a \( -name test -o -name tests \) \) \
			-o \
			\( -type f -a \( -name '*.pyc' -o -name '*.pyo' \) \) \
		\) -exec rm -rf '{}' +; \
	rm -f get-pip.py

ENV PYTHONPATH /code
ENV PYTHONUNBUFFERED 1
RUN mkdir /code
WORKDIR /code
ADD requirements.txt /code/
RUN pip install -r requirements.txt
ADD . /code/

CMD ["python3"]