FROM alpine:latest

ENV DEBIAN_FRONTEND=noninteractive

RUN apk update && \
    apk add postgresql && \
    mkdir /run/postgresql && \
    chown -R postgres:postgres /run/postgresql

USER postgres

RUN pg_ctl init -D /var/lib/postgresql/data && \
    echo "host all  all    0.0.0.0/0  md5" >> /var/lib/postgresql/data/pg_hba.conf && \
    echo "local all postgres  peer" >> /var/lib/postgresql/data/pg_hba.conf && \
    echo "listen_addresses='*'" >> /var/lib/postgresql/data/postgresql.conf && \
    chmod 0700 /var/lib/postgresql/data

ENTRYPOINT ["pg_ctl", "start", "-D", "/var/lib/postgresql/data"]