FROM debian:trixie-slim

# install make for building config files, pdns-server and bind backend for serving zones
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install -y --no-install-recommends \
  make \
  pdns-server pdns-backend-bind pdns-backend-sqlite3 \
  && rm -rf /var/lib/apt/lists/*

# install configuration files, create necessary directories
WORKDIR /etc/powerdns
RUN rm -rf pdns.d && rm -f named.conf
RUN mkdir -p db pdns.d /var/run/pdns
COPY pdns.conf pdns.conf
COPY zones pri

# build additional config files from templates (tpl)
COPY primary tpl
COPY primary/Makefile .
RUN make

# cleanup
RUN rm -rf tpl Makefile

# User permissions (pdns)
RUN chown pdns db /var/run/pdns

# DNSSEC (primary only)
USER pdns
RUN pdnsutil create-bind-db /etc/powerdns/db/bind-dnssec-db.sqlite3
RUN pdnsutil secure-all-zones
RUN cd pri && for i in *; do pdnsutil set-nsec3 $i "1 1 5 $(od -N16 -x < /dev/urandom | head -n1 | cut -b9- | sed 's/ //gi')"; done
RUN pdnsutil rectify-all-zones

CMD ["pdns_server", "--guardian=no", "--daemon=no", "--loglevel=10", "--webserver=no"]