fix dockerfile

dockerfile

@@ -9,9 +9,9 @@ RUN uv sync --frozen
 
 WORKDIR /app
 
-CMD exec /app/.venv/bin/gunicorn \
+CMD ["/app/.venv/bin/gunicorn", 
-    -w 4 \
+     "-w", "4",
-    -k uvicorn.workers.UvicornWorker \
+     "-k", "uvicorn.workers.UvicornWorker",
-    "api:app" \
+     "api:app",
-    -b "0.0.0.0:8081" \
+     "-b", "0.0.0.0:8081",
-    --log-config="/app/config/log.ini"
+     "--log-config=/app/config/log.ini"]