Add new deps, writen a db engine, docker-compose and .env-example

backend/docker-compose.yml

@@ -0,0 +1,36 @@
+services:
+  postgres:
+    image: postgres:18-alpine3.22
+    ports:
+      - "5432:5432"
+    environment:
+      POSTGRES_USER: ${POSTGRES_USER}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      POSTGRES_DB: ${POSTGRES_DB}
+    volumes:
+      - postgres:/var/lib/postgresql/data
+    networks:
+      - backend
+
+  backend:
+    build: .
+    ports:
+      - "8000:8000"
+    environment:
+      - POSTGRES_USER=${POSTGRES_USER}
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
+      - POSTGRES_DB=${POSTGRES_DB}
+      - POSTGRES_HOST=${POSTGRES_HOST}
+      - POSTGRES_PORT=${POSTGRES_PORT}
+    depends_on:
+      - postgres
+    networks:
+      - backend
+
+volumes:
+  postgres:
+    driver: local
+
+networks:
+  backend:
+    driver: bridge