chore: enhance Redis deploy configuration for constrained environments

- exclude `prod.cfg` from overlay processing in standalone GKE deployments
- add configurable Redis image registry and helm timeout for constrained networks
- update Helm chart to honor custom registry and timeout settings

etc/init_redis.sh

@@ -63,6 +63,11 @@ REDIS_PVC_SIZE="${REDIS_PVC_SIZE:-1Gi}"
 # (Redis is used as a pub/sub broker — durable storage is not required)
 REDIS_STORAGE_CLASS="${REDIS_STORAGE_CLASS:-${STORAGE_CLASS:-}}"
 REDIS_PERSISTENCE_ENABLED="${REDIS_PERSISTENCE_ENABLED:-false}"
+# Image registry override — set to "registry.bitnami.com" if docker.io is unreachable
+# Bitnami OCI registry works as an alternative when Docker Hub times out on constrained networks.
+REDIS_IMAGE_REGISTRY="${REDIS_IMAGE_REGISTRY:-}"
+# Helm timeout — increase for slow image pulls on constrained network links (e.g. Pi cluster)
+REDIS_HELM_TIMEOUT="${REDIS_HELM_TIMEOUT:-8m}"
 
 log()  { echo "[INFO]  $*"; }
 warn() { echo "[WARN]  $*" >&2; }
@@ -97,7 +102,7 @@ deploy_redis() {
     upgrade --install "$REDIS_RELEASE" "$REDIS_CHART"
     --namespace "$NAMESPACE"
     --create-namespace
-    --timeout 5m
+    --timeout "$REDIS_HELM_TIMEOUT"
     --wait
     --set architecture=standalone
     --set auth.enabled=false
@@ -117,6 +122,11 @@ deploy_redis() {
     helm_args+=(--set master.persistence.storageClass="$REDIS_STORAGE_CLASS")
   fi
 
+  if [[ -n "$REDIS_IMAGE_REGISTRY" ]]; then
+    log "Using image registry override: ${REDIS_IMAGE_REGISTRY}"
+    helm_args+=(--set global.imageRegistry="$REDIS_IMAGE_REGISTRY")
+  fi
+
   log "Deploying Redis (release=${REDIS_RELEASE}, ns=${NAMESPACE})..."
   helm "${helm_args[@]}"
 

etc/prole_cfg.sh

@@ -234,6 +234,7 @@ _prole_cfg_layer_files() {
     for f in "$env_dir"/*.cfg; do
       [[ -f "$f" ]] || continue
       [[ "$(basename "$f")" == "prole.cfg" ]] && continue
+      [[ "$(basename "$f")" == "prod.cfg" ]] && continue  # standalone GKE deploy config, not a prole.cfg overlay
       [[ "$(basename "$f")" == .* ]] && continue
       printf '%s\n' "$f"
     done