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# We do a multi-stage build (requires Docker >= 17.05) to install everything, then copy it all
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# to the final target image.
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# NOTE: psycopg2-binary won't install into Alpine because pg_config is missing, and to install that,
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# we need a full development environment :-/
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# https://github.com/psycopg/psycopg2/issues/684
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FROM python:alpine3.7 AS base
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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# install the requirements
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FROM base AS build
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RUN mkdir /install
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# NOTE: psycopg2 needs postgresql-dev and build tools, lxml needs libxslt
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RUN apk update && apk add postgresql-dev gcc python3-dev musl-dev && apk add libxslt-dev
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WORKDIR /install
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COPY requirements.txt /tmp/
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RUN pip install --upgrade pip
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RUN pip install --install-option="--prefix=/install" -r /tmp/requirements.txt
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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FROM base
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# copy the Python requirements
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COPY --from=build /install /usr/local
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# FUDGE! It looks like pip is not honoring the install prefix for dateutil (an alembic dependency) :-/
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COPY --from=build /usr/local/lib/python3.7/site-packages/python_dateutil-2.8.1.dist-info /usr/local/lib/python3.7/site-packages/python_dateutil-2.8.1.dist-info
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COPY --from=build /usr/local/lib/python3.7/site-packages/dateutil /usr/local/lib/python3.7/site-packages/dateutil
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RUN apk --no-cache add libpq
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RUN pip install --upgrade pip
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RUN apk add libxslt
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# install the application
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WORKDIR /app
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COPY asl_articles asl_articles
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COPY setup.py requirements.txt requirements-dev.txt run_server.py LICENSE.txt ./
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RUN pip install -e .
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# copy the config files
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ARG ENABLE_TESTS
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COPY asl_articles/config/logging.yaml.example asl_articles/config/logging.yaml
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COPY docker/config/* asl_articles/config/
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RUN rm -f asl_articles/config/debug.cfg
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# copy the alembic files (so that users can upgrade their database)
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COPY alembic alembic
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# launch the web server
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EXPOSE 5000
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ENV DBCONN undefined
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CMD [ "python", "/app/run_server.py" ]
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