FROM alpine:3.19.0

RUN apk update \
  && apk upgrade \
  && apk add \
    mariadb-client \
    pdns \
    pdns-backend-mysql \
    pdns-doc \
  && rm -rf /var/cache/apk/*

RUN arch=$([ "$(arch)" = 'aarch64' ] && echo -n 'arm64' || echo -n 'x86_64') \
  && wget -qO- https://github.com/kha7iq/subvars/releases/download/v0.1.4/subvars_Linux_${arch}.tar.gz \
    | tar -xzf - -C /usr/local/bin subvars \
  && chmod +x /usr/local/bin/subvars

COPY pdns.conf.tpl docker-entrypoint.sh /

ENV VERSION=4.8 \
  PDNS_guardian=yes \
  PDNS_setuid=pdns \
  PDNS_setgid=pdns \
  PDNS_launch=gmysql

EXPOSE 53 53/udp

ENTRYPOINT [ "/docker-entrypoint.sh" ]

CMD [ "/usr/sbin/pdns_server" ]