capsul-flask/Dockerfile

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Docker image, & local development docker-compose.yml (#2) Adds: - a Docker image, which can be used in both development and production - a `docker-compose.yml` file for local development (could probably be adapted for production deployments) Testing: - `git checkout docker` - `docker-compose up` - pray 🙏 - go to http://localhost:5000 ## App architecture I added the ability to load secret config variables (`HUB_TOKEN`, `STRIPE_SECRET_KEY` etc) from files, to support [Docker Secrets](https://docs.docker.com/engine/swarm/secrets/) natively. The code should probably log an error if a specified `HUB_TOKEN_FILE` doesn't exist instead of failing silently.. ## Docker architecture This uses a multi-stage build to reduce the size of the final image -- having pipenv install to a predefined virtualenv, and then copying that over. The compose file doesn't include a definition for a cron runner service, and I haven't tested running one yet. Here be dragons! You can rebuild the image locally using `docker-compose build`, but this isn't required for changes to the app code, only if you edit the `Dockerfile`, or want to publish your image for use on a swarm server (in which case you will need to edit the image name to put in your own Docker hub credentials). Currently, the image is rebuilt (should set up auto-tagging..) and published with every push to this 3wordchant/capsul-flask fork. Reviewed-on: https://git.autonomic.zone/3wordchant/capsul-flask/pulls/2 Co-authored-by: 3wordchant <3wordchant@noreply.git.autonomic.zone> Co-committed-by: 3wordchant <3wordchant@noreply.git.autonomic.zone>
2021-07-21 23:18:10 +00:00
FROM python:3.8-alpine as build
RUN apk add --no-cache \
build-base \
gcc \
gettext \
git \
jpeg-dev \
libffi-dev \
libjpeg \
musl-dev \
postgresql-dev \
python3-dev \
zlib-dev
RUN mkdir -p /app/{code,venv}
WORKDIR /app/code
COPY Pipfile Pipfile.lock /app/code/
RUN python3 -m venv /app/venv
RUN pip install pipenv setuptools
ENV PATH="/app/venv/bin:$PATH" VIRTUAL_ENV="/app/venv"
RUN pip install wheel cppy
# Install dependencies into the virtual environment with Pipenv
RUN pipenv install --deploy --verbose
FROM python:3.8-alpine
RUN apk add --no-cache \
cloud-utils \
libjpeg \
libpq \
libstdc++ \
libvirt-client \
openssh-client \
virt-install
COPY . /app/code/
WORKDIR /app/code
COPY --from=build /app/venv /app/venv
ENV PATH="/app/venv/bin:$PATH" VIRTUAL_ENV="/app/venv"
CMD ["gunicorn", "--bind", "0.0.0.0:5000", "-k", "gevent", "--worker-connections", "1000", "app:app"]
VOLUME /app/code
EXPOSE 5000