Small fixes for CLAMD Health Check

data/Dockerfiles/clamd/Dockerfile

@@ -117,6 +117,7 @@ COPY --from=builder "/clamav" "/"
 
 # init
 COPY clamd.sh /clamd.sh
+COPY clamdcheck.sh /usr/local/bin/
 RUN chmod +x /sbin/tini
 
 # healthcheck

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