Pull Docker image, setup pyenv for same python version, create virtualenv, install dependencies

setup.sh

#!/usr/bin/env bash
set -e -x

BASEIMAGE=`cat Dockerfile | grep ^FROM | cut -d " " -f 2`
docker pull $BASEIMAGE
PYTHON_DOCKER_VERSION=`docker run --rm $BASEIMAGE python --version | grep ^Python | cut -d " " -f 2`

if [ -e .python-version ];
then
    PYTHON_LOCAL_VERSION=`cat .python-version`

    if [[ ! $PYTHON_DOCKER_VERSION == $PYTHON_LOCAL_VERSION ]]; then
        echo "Python versions do not match: local is $PYTHON_LOCAL_VERSION, docker is $PYTHON_DOCKER_VERSION"
        exit -1
    fi
fi

pyenv versions --bare | grep $PYTHON_DOCKER_VERSION || pyenv install $PYTHON_DOCKER_VERSION
pyenv local $PYTHON_DOCKER_VERSION

virtualenv .venv/
source .venv/bin/activate
pip install -r requirements-dev.txt