Dockerfile

FROM python:3.5.2-slim

RUN set -ex \
    && apt-get update && apt-get install -y --no-install-recommends \
        ca-certificates \
    && buildDeps=' \
        gcc \
        libpq-dev \
    ' \
    && apt-get install -y $buildDeps --no-install-recommends \
    && pip install -U --no-cache-dir \
        pip \
        pymysql \
        psycopg2 \
        alembic \
    && apt-get purge -y --auto-remove $buildDeps \
    && rm -rf /tmp/* ~/.cache /var/lib/apt/lists/*

VOLUME /var/project
WORKDIR /var/project