FROM debian:buster
LABEL maintainer "Jan Dittberner <jan@dittberner.info>"

RUN apt-get update \
    && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
    dumb-init \
    postgresql \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*.*

EXPOSE 5432

VOLUME /var/lib/postgresql/
COPY pg_hba.conf /etc/postgresql/11/main/pg_hba.conf
COPY startup.sh /srv/
HEALTHCHECK CMD su postgres -c 'pg_isready -d postgres'

ENTRYPOINT ["dumb-init"]
CMD "/srv/startup.sh"