prosody: disable s2s module

Not used, not needed.

prosody/Dockerfile

@@ -54,6 +54,6 @@ COPY rootfs/ /
 COPY --from=builder /usr/local/lib/lua /usr/local/lib/lua
 COPY --from=builder /usr/local/share/lua /usr/local/share/lua
 
-EXPOSE 5222 5269 5347 5280
+EXPOSE 5222 5347 5280
 
 VOLUME ["/config", "/prosody-plugins-custom"]

prosody/rootfs/defaults/prosody.cfg.lua

@@ -84,7 +84,7 @@ https_ports = { }
 modules_disabled = {
 	-- "offline"; -- Store offline messages
 	-- "c2s"; -- Handle client connections
-	-- "s2s"; -- Handle server-to-server connections
+	"s2s"; -- Handle server-to-server connections
 };
 
 -- Disable account creation by default, for security