Dockerfile

ARG BASE_IMAGE

FROM $BASE_IMAGE

ARG SNAP_RISK=stable
ARG SNAP_TRACK
ARG SNAP_VERSION
ARG TARGETARCH

RUN apt-get update && apt-get install -y --no-install-recommends jq squashfs-tools curl ca-certificates

WORKDIR /root

RUN curl "https://api.snapcraft.io/v2/snaps/info/juju-db" -s -H "Snap-Device-Series: 16" > snapstore.json
RUN cat snapstore.json | jq -j --arg risk "$SNAP_RISK" --arg track "$SNAP_TRACK" --arg arch "$(echo "$TARGETARCH" | sed 's/ppc64le/ppc64el/')" --arg version "$SNAP_VERSION" \
    '."channel-map"|map(select(.channel.risk==$risk)|select(.channel.track==$track)|select(.channel.architecture==$arch)|select(.version==$version).download.url)[0]' > download.url
RUN curl $(cat download.url) -L -o juju-db.snap -s -H "Snap-Device-Series: 16"
RUN unsquashfs juju-db.snap

FROM $BASE_IMAGE

COPY --from=0 /root/squashfs-root /squashfs-root
RUN cp -R /squashfs-root/bin/* /bin \
&& cp -R /squashfs-root/lib/* /lib \
&& cp -R /squashfs-root/etc/* /etc \
&& cp -R /squashfs-root/usr/* /usr \
&& rm -Rf /squashfs-root \
&& apt-get update \
&& apt-get install -y libsqlite3-0 libgssapi-krb5-2 \
&& rm -rf /var/lib/apt/lists/* \
&& groupadd --gid 170 juju \
&& useradd --home-dir /var/lib/juju --shell /usr/sbin/nologin --no-create-home --uid 170 --gid 170 juju

ENTRYPOINT [ /bin/mongod ]