Fix dovecot for Docker

data/Dockerfiles/dovecot/rspamd-pipe

@@ -0,0 +1,8 @@
+#!/bin/bash
+if [[ ${2} == "learn_spam" ]]; then
+/usr/bin/curl --data-binary @- http://rspamd:11334/learnspam < /dev/stdin
+elif [[ ${2} == "learn_ham" ]]; then
+/usr/bin/curl --data-binary @- http://rspamd:11334/learnham < /dev/stdin
+fi
+# Always return 0 to satisfy Dovecot...
+exit 0