Add [database]: add the Postgres database to the Docker Compose config

docker/docker-compose.yaml

@@ -6,3 +6,14 @@ services:
       dockerfile: ./docker/Dockerfile
     command: sh -c "uv run --active --script ./scripts/pybabel.py compile && uv run ./src/main.py"
     restart: always
+
+  database:
+    container_name: ${POSTGRES_HOST}
+    image: postgres:15
+    ports:
+      - 127.0.0.1:${POSTGRES_PORT}:${POSTGRES_PORT}
+    restart: always
+    environment:
+      POSTGRES_USER: ${POSTGRES_USER}
+      POSTGRES_PASSWORD: ${POSTGRES_PASS}
+      POSTGRES_DB: ${POSTGRES_NAME}