Dockerfile

FROM python:2.7-alpine
MAINTAINER Nick Janetakis <nick.janetakis@gmail.com>

ENV INSTALL_PATH /bsawf
RUN mkdir -p $INSTALL_PATH

WORKDIR $INSTALL_PATH

COPY requirements.txt requirements.txt
RUN apk add --no-cache --virtual .build-deps \
                build-base postgresql-dev libffi-dev \
        && pip install -r requirements.txt \
        && find /usr/local \
                \( -type d -a -name test -o -name tests \) \
                -o \( -type f -a -name '*.pyc' -o -name '*.pyo' \) \
                -exec rm -rf '{}' + \
        && runDeps="$( \
                scanelf --needed --nobanner --recursive /usr/local \
                        | awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
                        | sort -u \
                        | xargs -r apk info --installed \
                        | sort -u \
        )" \
        && apk add --virtual .rundeps $runDeps \
        && apk del .build-deps

COPY . .

CMD gunicorn -b 0.0.0.0:8000 --access-logfile - "bsawf.app:create()"

Thanks. Your gist has been incorporated (and credited) into http://nickjanetakis.com/blog/alpine-based-docker-images-make-a-difference-in-real-world-apps.

With this example, what if a binary exists in /usr/bin and not /usr/local? Won't it's dependencies get wiped out?