Update Dockerfile

Dockerfile

@@ -1,8 +1,14 @@
 FROM stepfun2025/vllm:step-audio-2-v20250909
 
+RUN useradd -m -u 1000 user
+
 WORKDIR /app
 
-RUN mkdir -p /app && chown root:root /app && chmod 755 /app
+COPY --chown=user ./requirements.txt requirements.txt
+
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
+
+COPY --chown=user . /app
 
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt