FROM alpine:3.6

RUN addgroup nomad && \
    adduser -S -G nomad nomad

ENV GLIBC_VERSION "2.25-r0"
ENV GOSU_VERSION 1.10
ENV DUMB_INIT_VERSION 1.2.0

RUN set -x && \
    apk --update add --no-cache --virtual .gosu-deps tzdata dpkg curl ca-certificates gnupg libcap openssl && \
    curl -Ls https://github.com/andyshinn/alpine-pkg-glibc/releases/download/${GLIBC_VERSION}/glibc-${GLIBC_VERSION}.apk > /tmp/glibc-${GLIBC_VERSION}.apk && \
    apk add --allow-untrusted /tmp/glibc-${GLIBC_VERSION}.apk && \
    rm -rf /tmp/glibc-${GLIBC_VERSION}.apk /var/cache/apk/* && \
    wget -O /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v${DUMB_INIT_VERSION}/dumb-init_${DUMB_INIT_VERSION}_amd64 && \
    chmod +x /usr/local/bin/dumb-init && \
    dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')" && \
    wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch" && \
    export GNUPGHOME="$(mktemp -d)" && \
    chmod +x /usr/local/bin/gosu && \
    gosu nobody true && \
    apk del .gosu-deps

ENV NOMAD_VERSION 0.7.0-beta1
ENV NOMAD_SHA256 174794d96d2617252875e2e2ff9e496120acc4a97be54965c324b9a5d11b37ab

COPY nomad /bin/nomad

RUN mkdir -p /nomad/data && \
    mkdir -p /etc/nomad && \
    chown -R nomad:nomad /nomad

EXPOSE 4646 4647 4648

ADD start.sh /usr/local/bin/start.sh

ENTRYPOINT ["/usr/local/bin/start.sh"]