Replace amavis with rmilter plus clamav and rspamd

clamav/Dockerfile

@@ -0,0 +1,13 @@
+FROM alpine
+
+RUN apk add --update \
+      clamav \
+      rsyslog \
+      wget \
+ && rm -rf /var/cache/apk/*
+
+
+COPY conf /etc/clamav
+
+
+CMD ["/usr/sbin/clamd"]