Updated mailcow Components to be ARM64 compatible

data/Dockerfiles/clamd/clamdcheck.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -eu
+
+if [ "${CLAMAV_NO_CLAMD:-}" != "false" ]; then
+	if [ "$(echo "PING" | nc localhost 3310)" != "PONG" ]; then
+		echo "ERROR: Unable to contact server"
+		exit 1
+	fi
+
+	echo "Clamd is up"
+fi
+
+exit 0