A little cleaner check for valid sieve files.

FROM buildpack-deps:buster as delete_to_trash

# hadolint ignore=DL3008,DL3015

RUN apt-get update && \

    DEBIAN_FRONTEND=noninteractive  apt-get install -y dovecot-dev && \

    git clone https://github.com/pali/dovecot_deleted_to_trash && \

    cd dovecot_deleted_to_trash && \

    make

    make -C dovecot_deleted_to_trash

FROM debian:buster-slim

# hadolint ignore=DL3008

RUN apt-get update && \

    DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \

        dovecot-ldap \

RUN patch --strip 0 --verbose --directory /etc/dovecot --input /root/patch.diff && \

    doveconf

COPY --chown=mail:mail *.sieve /var/lib/dovecot/sieve.d/

RUN cd /var/lib/dovecot/sieve.d/ && \

    ls *.sieve | xargs -tn1 sievec && \

    rm *.svbin

RUN find /var/lib/dovecot/sieve.d/ -type f -name '*.sieve' -exec sievec -d {} \;

VOLUME /var/mail

VOLUME /run/dovecot

EXPOSE 993 25