add docker

Dockerfile

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+FROM alpine:3.10
+
+ADD ./ /app/
+
+RUN \
+    echo 'installing dependencies' && \
+    apk add --no-cache \
+    bash \
+    git \
+    musl-dev \
+    gcc \
+    postgresql-dev \
+    python3-dev \
+    py3-psycopg2 \
+    make \
+    zlib-dev \
+    jpeg-dev \
+    libmagic \
+    && \
+    ln -s /usr/bin/python3 /usr/bin/python
+
+# hack around https://github.com/pypa/pip/issues/6158#issuecomment-456619072
+ENV PIP_DOWNLOAD_CACHE=/noop/
+RUN \
+    echo 'installing pip requirements' && \
+    pip3 install --upgrade pip && \
+    pip3 install setuptools wheel && \
+    pip3 install -r /app/requirements.txt && \
+    rm -rf $PIP_DOWNLOAD_CACHE
+
+RUN mkdir /uploads /statics
+VOLUME /uploads
+VOLUME /statics
+
+EXPOSE 8000
+WORKDIR /app/
+ENTRYPOINT ["./docker/entrypoint.sh"]
+CMD ["./docker/server.sh"]

docker/entrypoint.sh

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+#!/bin/sh
+set -e
+
+export STATIC_ROOT=/statics
+export MEDIA_ROOT=/uploads
+
+exec "$@"

docker/server.sh

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+#!/bin/bash -eux
+python /app/manage.py collectstatic --noinput
+python /app/manage.py migrate
+cd /app/
+gunicorn --log-file=- --worker-tmp-dir /dev/shm config.asgi:application -w ${CAMGEAR_WEB_WORKERS-2} --threads ${CAMGEAR_WEB_THREADS-4} -k uvicorn.workers.UvicornWorker -b 0.0.0.0:8000 ${GUNICORN_ARGS-}