FROM alpine:3.7

# Internal environment variables
ENV APP_DIR=/srv/app
ENV SRC_DIR=/srv/app/src
ENV CKAN_INI=${APP_DIR}/ckan.ini
ENV PIP_SRC=${SRC_DIR}
ENV CKAN_STORAGE_PATH=/var/lib/ckan
ENV GIT_URL=https://github.com/ckan/ckan.git
# CKAN version to build
ENV GIT_BRANCH=ckan-2.9.3
# Customize these on the .env file if needed
ENV CKAN_SITE_URL=http://localhost:5000
ENV CKAN__PLUGINS image_view text_view recline_view datastore datapusher envvars

WORKDIR ${APP_DIR}

# Install necessary packages to run CKAN
RUN apk add --no-cache tzdata \
        git \
        gettext \
        postgresql-client \
        python3 \
        apache2-utils \
        libxml2 \
        libxslt \
        musl-dev \
        uwsgi-http \
        uwsgi-corerouter \
        uwsgi-python3 \
        py3-gevent \
        uwsgi-gevent \
        libmagic \
        curl \
        sudo && \
    # Packages to build CKAN requirements and plugins
    apk add --no-cache --virtual .build-deps \
        postgresql-dev \
        gcc \
        make \
        g++ \
        autoconf \
        automake \
	    libtool \
        python3-dev \
        py3-virtualenv \
        libxml2-dev \
        libxslt-dev \
        linux-headers && \
        # Create SRC_DIR
        mkdir -p ${SRC_DIR}

# Install pip
RUN curl -o ${SRC_DIR}/get-pip.py https://bootstrap.pypa.io/get-pip.py && \
    python3 ${SRC_DIR}/get-pip.py

# Set up Python3 virtual environment
RUN cd ${APP_DIR} && \
    python3 -m venv ${APP_DIR} && \
    source ${APP_DIR}/bin/activate

# Virtual environment binaries/scripts to be used first
ENV PATH=${APP_DIR}/bin:${PATH}   
    
# Install CKAN, uwsgi plus extensions
RUN pip3 install -e git+${GIT_URL}@${GIT_BRANCH}#egg=ckan && \ 
    pip3 install uwsgi && \
    cd ${SRC_DIR}/ckan && \
    cp who.ini ${APP_DIR} && \
    pip install --no-binary :all: -r requirements.txt && \
    # Install CKAN envvars to support loading config from environment variables
    pip3 install -e git+https://github.com/okfn/ckanext-envvars.git#egg=ckanext-envvars && \
    # Install CKAN extensions
    pip3 install -e 'git+https://github.com/DataShades/ckanext-xloader@py3#egg=ckanext-xloader' && \
    pip3 install -r $CKAN_VENV/src/ckanext-xloader/requirements.txt && \
    pip3 install -U requests[security] && \
    pip3 install -e 'git+https://github.com/DataShades/ckanext-harvest.git@py3#egg=ckanext-harvest' && \
    pip3 install -r $CKAN_VENV/src/ckanext-harvest/pip-requirements.txt && \
    pip3 install -e 'git+https://github.com/DataShades/ckanext-syndicate@py3#egg=ckanext-syndicate' && \
    pip3 install -r $CKAN_VENV/src/ckanext-syndicate/requirements.txt && \
    pip3 install -e 'git+https://github.com/ckan/ckanext-scheming.git@master#egg=ckanext-scheming' && \
    pip3 install -r $CKAN_VENV/src/ckanext-scheming/requirements.txt

# Create and update CKAN config
RUN ckan generate config ${CKAN_INI}

# Install and configure supervisor
RUN pip3 install supervisor && \
mkdir /etc/supervisord.d

# Copy all setup files
COPY setup ${APP_DIR}
COPY setup/supervisor.worker.conf /etc/supervisord.d/worker.conf
COPY setup/supervisord.conf /etc/supervisord.conf

# Create a local user and group to run the app
RUN addgroup -g 92 -S ckan && \
    adduser -u 92 -h /srv/app -H -D -S -G ckan ckan

# Create local storage folder
RUN mkdir -p $CKAN_STORAGE_PATH && \
    chown -R ckan:ckan $CKAN_STORAGE_PATH

# Create entrypoint directory for children image scripts
ONBUILD RUN mkdir /docker-entrypoint.d

RUN chown ckan -R /srv/app

EXPOSE 5000

HEALTHCHECK --interval=10s --timeout=5s --retries=5 CMD curl --fail http://localhost:5000/api/3/action/status_show || exit 1

CMD ["/srv/app/start_ckan.sh"]