Allow override of zabbix db port

.shellcheckrc

@@ -0,0 +1,2 @@
+shell=bash
+external-sources=true

borg.backup.zabbix.settings-default

@@ -15,3 +15,5 @@ ZABBIX_DATABASE="";
 ZABBIX_CONFIG="";
 # unknown tables, default ignore, is set to true, will force backup them
 ZABBIX_UNKNOWN_TABLES="";
+# overide zabbix db port read from zabbix config, if not set read from zabbix config
+ZABBIX_DB_PORT="";

borg.backup.zabbix.sh

@@ -37,6 +37,9 @@ fi;
 if [ "${ZABBIX_DATABASE}" = "psql" ]; then
 	OPT_ZABBIX_DUMP="-C";
 fi;
+if [ -n "${ZABBIX_DB_PORT}" ]; then
+	ZABBIX_DB_PORT="-P 5432";
+fi;
 if [ "${ZABBIX_DATABASE}" != "psql" ] && [ "${ZABBIX_DATABASE}" != "mysql" ]; then
 	echo "[! $(date +'%F %T')] Zabbix dump must have database set to either psql or mysql";
 	. "${DIR}/borg.backup.functions.close.sh" 1;
@@ -70,13 +73,13 @@ fi;
 
 printf "${PRINTF_SUB_BLOCK}" "BACKUP: zabbix settings" "$(date +'%F %T')" "${MODULE}";
 if [ ${DEBUG} -eq 1 ] || [ ${DRYRUN} -eq 1 ]; then
-	echo "${ZABBIX_DUMP_BIN} -t ${ZABBIX_DATABASE} ${OPT_ZABBIX_UNKNOWN_TABLES} ${OPT_ZABBIX_DUMP} ${OPT_ZABBIX_CONFIG} -o - | ${BORG_CALL}"
+	echo "${ZABBIX_DUMP_BIN} ${ZABBIX_DB_PORT} -t ${ZABBIX_DATABASE} ${OPT_ZABBIX_UNKNOWN_TABLES} ${OPT_ZABBIX_DUMP} ${OPT_ZABBIX_CONFIG} -o - | ${BORG_CALL}"
 	if [ -z "${ONE_TIME_TAG}" ]; then
 		echo "${BORG_PRUNE}";
 	fi;
 fi;
 if [ ${DRYRUN} -eq 0 ]; then
-	${ZABBIX_DUMP_BIN} -t ${ZABBIX_DATABASE} ${OPT_ZABBIX_UNKNOWN_TABLES} ${OPT_ZABBIX_DUMP} ${OPT_ZABBIX_CONFIG} -o - | ${BORG_CALL};
+	${ZABBIX_DUMP_BIN} ${ZABBIX_DB_PORT} -t ${ZABBIX_DATABASE} ${OPT_ZABBIX_UNKNOWN_TABLES} ${OPT_ZABBIX_DUMP} ${OPT_ZABBIX_CONFIG} -o - | ${BORG_CALL};
 fi;
 if [ -z "${ONE_TIME_TAG}" ]; then
 	printf "${PRINTF_SUB_BLOCK}" "PRUNE" "$(date +'%F %T')" "${MODULE}";