# syntax=docker/dockerfile:1.7

FROM debian:bookworm-slim
ENV DEBIAN_FRONTEND=noninteractive
RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
    --mount=type=cache,target=/var/lib/apt/lists,sharing=locked \
    rm -f /etc/apt/apt.conf.d/docker-clean && \
    apt-get update && apt-get install -y --no-install-recommends opendkim opendkim-tools sqlite3 ca-certificates
COPY opendkim.conf /etc/opendkim.conf
COPY TrustedHosts /etc/opendkim/TrustedHosts
COPY entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh
EXPOSE 8891
CMD ["/entrypoint.sh"]