Create demo docker compose

docker-compose.demo.yml

+services:
+  web:
+    build: .
+    command: gunicorn heyheyLibrary.wsgi:application --bind 0.0.0.0:8000
+    environment:
+      - DJANGO_ALLOWED_HOSTS=librarydemo.rb9.xyz
+      - OPENSEARCH_USERNAME=admin
+      - OPENSEARCH_PASSWORD=VeryInsecurePassword1!
+    volumes:
+      - demo_static:/home/app/web/staticfiles
+      - demo_media:/home/app/web/mediafiles
+      - ./db.sqlite3:/home/app/web/db.sqlite3
+    expose:
+      - 8000
+    depends_on:
+      - opensearch
+    networks:
+      - librarydemo
+
+  opensearch:
+    image: opensearchproject/opensearch:latest
+    ulimits:
+      memlock:
+        soft: -1 # Set memlock to unlimited (no soft or hard limit)
+        hard: -1
+      nofile:
+        soft: 65536 # Maximum number of open files for the opensearch user - set to at least 65536
+        hard: 65536
+    volumes:
+      - demo_opensearch:/usr/share/opensearch/data # Creates volume called opensearch-data1 and mounts it to the container
+    expose:
+      - 9200
+      - 9600
+    networks:
+      - librarydemo
+
+  nginx:
+    image: nginx:1.27
+    volumes:
+      - ./nginx.conf:/etc/nginx/nginx.conf:ro
+      - demo_static:/home/app/web/staticfiles
+      - demo_media:/home/app/web/mediafiles
+    ports:
+      - 1337:80
+    depends_on:
+      - web
+    networks:
+      - librarydemo
+
+volumes:
+  demo_static:
+  demo_media:
+  demo_opensearch:
+
+networks:
+  librarydemo:
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