update create redis-cluster shell script

inabox/create-redis-cluster.sh

@@ -1,31 +1,25 @@
 #!/bin/bash
-set -e
 
-REDIS_CLUSTER_ID="test-eigenda-redis-cluster"
-REDIS_PORT="6379"
-AWS_REGION="us-east-1"
+# Specify the Redis Docker image version
+REDIS_IMAGE="redis:latest"
 
-# Check if the Redis cluster already exists
-function redis_cluster_exists() {
-    aws elasticache describe-cache-clusters --region $AWS_REGION | grep -q $REDIS_CLUSTER_ID
-    return $?
-}
+# Specify the Redis container name
+REDIS_CONTAINER_NAME="test-eigenda-redis-cluster"
 
-# Start Redis service using LocalStack
-function create_redis_cluster() {
-    aws elasticache create-cache-cluster \
-        --cache-cluster-id $REDIS_CLUSTER_ID \
-        --engine redis \
-        --cache-node-type cache.t2.micro \
-        --num-cache-nodes 1 \
-        --port $REDIS_PORT \
-        --region $AWS_REGION
-}
+# Specify the port to be used for Redis
+REDIS_PORT="6379"
 
-# Check if Redis cluster exists and create it if it does not
-if redis_cluster_exists; then
-    echo "Redis cluster $REDIS_CLUSTER_ID already exists."
+# Check if the Redis container is already running
+if [ $(docker ps -q -f name="$REDIS_CONTAINER_NAME") ]; then
+    echo "Redis container ($REDIS_CONTAINER_NAME) is already running."
 else
-    echo "Creating Redis cluster $REDIS_CLUSTER_ID."
-    create_redis_cluster
+    # Check if the Redis container exists but is stopped
+    if [ $(docker ps -aq -f name="$REDIS_CONTAINER_NAME") ]; then
+        # Start the existing Redis container
+        docker start "$REDIS_CONTAINER_NAME"
+    else
+        # Run a new Redis container
+        docker run --name "$REDIS_CONTAINER_NAME" -p "$REDIS_PORT:$REDIS_PORT" -d "$REDIS_IMAGE"
+    fi
+    echo "Redis server started and available on port $REDIS_PORT"
 fi