ARG FROM=docker.io/ubuntu:bionic
FROM ${FROM}

ENV DEBIAN_FRONTEND=noninteractive
ENV APACHE_FRONTEND_PORT 8000
ENV APACHE_FRONTEND_SECURE_PORT 8443
ENV ES_DSL_VERSION=5.4.0
ENV ES_VERSION=5.5.3
ENV KUBE_VERSION=1.16.2
ENV NAGIOSADMIN_EMAIL nagios@localhost
ENV NAGIOS_HOME /opt/nagios
ENV NAGIOS_PLUGIN_DIR /usr/lib/nagios/plugins
ENV VERSION=4.4.3

RUN apt-get -o Acquire::ForceIPv4=true -y update \
        && apt-get -y install curl apache2 checkinstall unzip libapache2-mod-php snmp snmpd snmp-mibs-downloader jq python3-requests \
        && apt-get -y install --no-install-recommends monitoring-plugins python3-pip \
        && apt-get clean \
        && rm -rf /var/lib/apt/lists/*

RUN rm -f /usr/bin/python
RUN ln -s /usr/bin/python3 /usr/bin/python

RUN pip3 install --upgrade pip \
        && hash -r \
        && pip3 --no-cache-dir install --upgrade setuptools \
        && pip3 --no-cache-dir install --upgrade kubernetes==22.6.0 \
        && pip3 --no-cache-dir install --upgrade elasticsearch==${ES_VERSION} \
        && pip3 --no-cache-dir install --upgrade elasticsearch-dsl==${ES_DSL_VERSION} \
        && pip3 install requests -U

RUN groupadd -g 3000 nagios
RUN useradd -u 3000 -g nagios -d ${NAGIOS_HOME} -s /bin/bash -c 'Nagios Admin' nagios
RUN adduser www-data nagios

RUN TMP_DIR=$(mktemp --directory) ;\
    cd ${TMP_DIR} ;\
    curl -sSL https://dl.k8s.io/v${KUBE_VERSION}/kubernetes-client-linux-amd64.tar.gz | tar -zxv --strip-components=1 ;\
    mv ${TMP_DIR}/client/bin/kubectl /usr/local/bin/kubectl ;\
    chmod +x /usr/local/bin/kubectl

ADD https://assets.nagios.com/downloads/nagioscore/releases/nagios-${VERSION}.tar.gz ${TMP_DIR}/
RUN cd ${TMP_DIR} && \
        tar zxf ${TMP_DIR}/nagios-${VERSION}.tar.gz  && \
        cd nagios-${VERSION} && \
        ./configure --with-lockfile=/var/run/nagios.lock --prefix=${NAGIOS_HOME} --with-nagios-user=nagios --with-nagios-group=nagios --with-command-user=nagios --with-command-group=nagios && \
        make all  && \
        make install  && \
        make install-init  && \
        make install-config  && \
        make install-commandmode  && \
        make install-webconf  && \
        cd ${TMP_DIR} && \
        rm -rf nagios-* && \
        rm -rf ${TMP_DIR}

COPY apache2/sites-available/* /etc/apache2/sites-available/
COPY apache2/ports.conf /etc/apache2/

RUN  a2ensite nagios  && \
        a2enmod cgi && \
        a2dissite 000-default

COPY scripts/entrypoint.sh /entrypoint.sh
COPY plugins/* ${NAGIOS_PLUGIN_DIR}/
COPY scripts/snmp-mibs/* /usr/share/snmp/mibs/

EXPOSE ${APACHE_FRONTEND_PORT}/tcp
EXPOSE ${APACHE_FRONTEND_SECURE_PORT}/tcp

ENTRYPOINT ["/entrypoint.sh"]