FROM alpine:3.8 RUN apk add --no-cache \ dovecot dovecot-pigeonhole-plugin dovecot-fts-lucene rspamd-client \ python3 py3-pip \ && pip3 install --upgrade pip \ && pip3 install jinja2 podop tenacity COPY conf /conf COPY start.py /start.py EXPOSE 110/tcp 143/tcp 993/tcp 4190/tcp 2525/tcp VOLUME ["/data", "/mail"] CMD /start.py HEALTHCHECK CMD echo QUIT|nc localhost 110|grep "Dovecot ready."