Dockerfile

# Because the idea is to build Stackhub containers from common bases we _and_
# Docker does not support composition we will inherit from stackhub/base-confd
# then shoehorn in glibc
FROM stackhub/base-confd
MAINTAINER Boyd Hemphill <boyd@stackengine.com>

#
# Upgrade OS and shoehorn in glibc
# thanks to sdurrheimer/alpine-glibc and
# Andy Shinn - https://github.com/gliderlabs/docker-alpine/issues/11
#
ENV \
    ALPINE_GLIBC_URL="https://circle-artifacts.com/gh/andyshinn/alpine-pkg-glibc/6/artifacts/0/home/ubuntu/alpine-pkg-glibc/packages/x86_64/" \
    GLIBC_PKG="glibc-2.21-r2.apk" \
    GLIBC_BIN_PKG="glibc-bin-2.21-r2.apk"

RUN \
    apk add --update -t deps wget ca-certificates openssl \
    && apk add --update -t openssl \
    && cd /tmp \
    && wget ${ALPINE_GLIBC_URL}${GLIBC_PKG} ${ALPINE_GLIBC_URL}${GLIBC_BIN_PKG} \
    && apk add --allow-untrusted ${GLIBC_PKG} ${GLIBC_BIN_PKG} \
    && /usr/glibc/usr/bin/ldconfig /lib /usr/glibc/usr/lib \
    && echo 'hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4' >> /etc/nsswitch.conf \
    && apk del --purge deps \
    && rm /tmp/* /var/cache/apk/*

#
# Prometheus is not a package for Alpine so running with scissors.
#

# Set the version of prometheus
ENV PROM_VER="0.16.0"
ENV GH_URL="https://github.com/prometheus/prometheus/releases/download"
# Get prometheus from github releases 

RUN \
    wget \
    -O /tmp/prometheus.tar.gz \
    ${GH_URL}/${PROM_VER}/prometheus-${PROM_VER}.linux-amd64.tar.gz && \
    tar -xzf /tmp/prometheus.tar.gz -C /tmp && \
    mkdir -p /etc/prometheus && \
    mv /tmp/prometheus-${PROM_VER}.linux-amd64/prometheus /bin/ && \
    mv /tmp/prometheus-${PROM_VER}.linux-amd64/promtool /bin/ && \
    mv /tmp/prometheus-${PROM_VER}.linux-amd64/console_libraries/ \
       /etc/prometheus/ && \
    mv /tmp/prometheus-${PROM_VER}.linux-amd64/consoles/ \
       /etc/prometheus/ && \
    rm -rfv /tmp/prometheus*

#
# Now lay down all the templating
#

# Basic config so prometheus starts even if there is a problem with confd
ADD \
    prometheus/prometheus.yml.stub \
    /etc/prometheus/prometheus.yml

ADD \
    prometheus/prometheus.yml.template_orig \
    /etc/confd/templates/prometheus.yml.template_orig

ADD \
    prometheus/prometheus.toml.template \
    /etc/confd/conf.d/prometheus.toml.template

RUN \
    mkdir -pv /etc/sv/prometheus && \
    chmod 2775 /etc/sv/prometheus && \
    ln -sv /etc/sv/prometheus /service

ADD \
    prometheus/prometheus.sh \
    /etc/sv/prometheus/run 

ENTRYPOINT ["/sbin/runsvdir", "/service"]