Add insecure password to opensearch container

docker-compose.demo.yml

@@ -28,6 +28,10 @@ services:
         hard: 65536
     volumes:
       - demo_opensearch:/usr/share/opensearch/data
+    environment:
+      - discovery.type=single-node
+      - bootstrap.memory_lock=true
+      - OPENSEARCH_INITIAL_ADMIN_PASSWORD=VeryInsecurePassword1!
     expose:
       - 9200
       - 9600