Move to Docker Compose and multiple containers

dovecot/Dockerfile

@@ -0,0 +1,17 @@
+FROM alpine
+
+RUN echo "@testing http://nl.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories \
+ && echo "@community http://dl-3.alpinelinux.org/alpine/edge/community/" >> /etc/apk/repositories \
+ && apk add --update \
+     dovecot \
+     dovecot-sqlite \
+     dovecot-pigeonhole-plugin@community \
+     dovecot-antispam-plugin@testing \
+ && rm -rf /var/cache/apk/*
+
+COPY conf /etc/dovecot
+COPY sieve /var/lib/dovecot
+
+COPY start.sh /start.sh
+
+CMD ["/start.sh"]