docker-redis - improve lockfile for redis, add redis-insights, make sure app image has all it needs to build canvas

Signed-off-by: Dave Richer <dave@imexsystems.ca>

redis/dockerdata/.gitignore

@@ -1,3 +1,4 @@
 *
-!lock\
-lock\redis-cluster-init.lock
+!lock/
+lock/*
+!lock/.gitkeep

redis/entrypoint.sh

@@ -1,19 +1,35 @@
 #!/bin/sh
 
+LOCKFILE="/redis-lock/redis-cluster-init.lock"
+
 # Start Redis server in the background
 redis-server /usr/local/etc/redis/redis.conf &
 
 # Wait for Redis server to start
 sleep 5
 
-# Only initialize the cluster from one node to prevent race conditions
-if [ "$HOSTNAME" = "redis-node-1" ]; then
+# Only initialize the cluster if the lock file doesn't exist
+if [ ! -f "$LOCKFILE" ]; then
   echo "Initializing Redis Cluster..."
+
+  # Create lock file to prevent further initialization attempts
+  touch "$LOCKFILE"
+  if [ $? -eq 0 ]; then
+    echo "Lock file created successfully at $LOCKFILE."
+  else
+    echo "Failed to create lock file."
+  fi
+
+  # Initialize the Redis cluster
   yes yes | redis-cli --cluster create \
     redis-node-1:6379 \
     redis-node-2:6379 \
     redis-node-3:6379 \
     --cluster-replicas 0
+
+  echo "Redis Cluster initialized."
+else
+  echo "Cluster already initialized, skipping initialization."
 fi
 
 # Keep the container running