fix: update license information to GNU GPL v3 in README, package.json, and package-lock.json

fix: Add valkey to compose in case system is too old for DragonflyDB

compose.yml

@@ -46,9 +46,26 @@ services:
     networks:
       - backend
 
+# Use valkey, if your system is too old for DragonflyDB
+#  valkey:
+#    image: valkey/valkey:9
+#    restart: unless-stopped
+#    ulimits:
+#      memlock: -1
+#    volumes:
+#      - valkeydata:/data
+#    healthcheck:
+#      test: ["CMD", "redis-cli", "-p", "6379", "ping"]
+#      interval: 5s
+#      timeout: 5s
+#      retries: 5
+#    networks:
+#      - backend
+
 volumes:
   pgdata:
   dragonflydata:
+  #valkeydata:
 
 networks:
   frontend: