add: example docker compose file

docker-compose.example.yml

@@ -0,0 +1,71 @@
+version: '3.8'
+
+services:
+  db:
+    image: postgres:17
+    ports:
+      - "5431:5432"
+    environment:
+      POSTGRES_USER: cvsa
+      POSTGRES_PASSWORD: ""
+      POSTGRES_DB: cvsa_main
+    volumes:
+      - ./data:/var/lib/postgresql/data
+  
+  redis:
+    image: redis:latest
+    ports:
+      - "6378:6379"
+    volumes:
+      - ./redis/data:/data
+      - ./redis/redis.conf:/usr/local/etc/redis/redis.conf
+      - ./redis/logs:/logs
+
+  frontend:
+    build:
+      context: .
+      dockerfile: Dockerfile.frontend
+    ports:
+      - "4321:4321"
+    environment:
+      - HOST=0.0.0.0
+      - PORT=4321
+      - DB_HOST=db
+      - DB_NAME=cvsa_main
+      - DB_NAME_CRED=cvsa_cred
+      - DB_USER=cvsa
+      - DB_PORT=5432
+      - DB_PASSWORD=""
+      - LOG_VERBOSE=/app/logs/verbose.log
+      - LOG_WARN=/app/logs/warn.log
+      - LOG_ERR=/app/logs/error.log
+    depends_on:
+      - db
+    volumes:
+      - /path/to/your/logs:/app/logs
+  backend:
+    build:
+      context: .
+      dockerfile: Dockerfile.backend
+    ports:
+      - "8000:8000"
+    environment:
+      - HOST=0.0.0.0
+      - DB_HOST=db
+      - DB_NAME=cvsa_main
+      - DB_NAME_CRED=cvsa_cred
+      - DB_USER=cvsa
+      - DB_PORT=5432
+      - DB_PASSWORD=""
+      - LOG_VERBOSE=/app/logs/verbose.log
+      - LOG_WARN=/app/logs/warn.log
+      - LOG_ERR=/app/logs/error.log
+      - REDIS_HOST=redis
+      - REDIS_PORT=6379
+    depends_on:
+      - db
+    volumes:
+      - /path/to/your/logs:/app/logs
+
+volumes:
+  db_data: