[Dovecot] Use socket instead of worker IP

data/Dockerfiles/dovecot/rspamd-pipe-ham

@@ -1,4 +1,4 @@
 #!/bin/bash
-/usr/bin/curl -s --data-binary @- http://rspamd:11334/learnham < /dev/stdin
+/usr/bin/curl -s --data-binary @- --unix-socket /rspamd/rspamd.sock http://rspamd:11334/learnham < /dev/stdin
 # Always return 0 to satisfy Dovecot...
 exit 0

data/Dockerfiles/dovecot/rspamd-pipe-spam

@@ -1,4 +1,4 @@
 #!/bin/bash
-/usr/bin/curl -s --data-binary @- http://rspamd:11334/learnspam < /dev/stdin
+/usr/bin/curl -s --data-binary @- --unix-socket /rspamd/rspamd.sock http://rspamd:11334/learnspam < /dev/stdin
 # Always return 0 to satisfy Dovecot...
 exit 0