Add redis-cluster-6.2.12 image for CI pipeline

scripts/run-redis-cluster

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# Approach references https://docs.docker.com/config/containers/multi-service_container/#use-a-wrapper-script
+# This script starts 3 Redis server process in the background and syncs them after a short wait.
+
+start_redis_server() {
+  redis-server --port $1\
+    --cluster-enabled yes \
+    --cluster-node-timeout 5000 \
+    --bind 127.0.0.1 \
+    --cluster-config-file "$2" &
+}
+
+start_redis_server 7001 nodes-1.conf
+start_redis_server 7002 nodes-2.conf
+start_redis_server 7003 nodes-3.conf
+
+sleep 3
+
+redis-cli --cluster create 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 --cluster-yes
+
+wait -n
+
+exit $?