Dockerfile

FROM ubuntu:18.04

RUN \
    apt-get update \
    && apt-get install -y mongodb

ADD https://github.com/just-containers/s6-overlay/releases/download/v1.21.8.0/s6-overlay-amd64.tar.gz /tmp/
RUN tar xzf /tmp/s6-overlay-amd64.tar.gz -C /

# Setup service files to automatically run mongodb in the background
# and log using s6-overlay's logutil-service
RUN \
    mkdir -p /data/db \
    && mkdir /etc/services.d/mongod \
        && echo "#! /usr/bin/with-contenv /bin/sh\nmongod >/dev/null 2>/dev/null" >> /etc/services.d/mongod/run \
        && chmod a+x /etc/services.d/mongod/run \
        && mkdir /etc/services.d/mongod/log \
        && echo "#!/usr/bin/execlineb -P\ns6-setuidgid mongodb logutil-service /var/log/mongodbz" >> /etc/services.d/mongod/log/run \
        && chmod a+x /etc/services.d/mongod/log/run

ENTRYPOINT ["/init"]