fix: install depedencies before switch user

Dockerfile

@@ -1,9 +1,5 @@
 FROM python:3.10-slim
 
-RUN useradd -m -u 1000 user
-USER user
-ENV PATH="/home/user/.local/bin:$PATH"
-
 RUN apt-get update && apt-get install -y \
     libgl1-mesa-glx \
     ffmpeg \
@@ -12,6 +8,10 @@ RUN apt-get update && apt-get install -y \
     && apt-get purge -y --auto-remove nvidia-common \
     && rm -rf /var/lib/apt/lists/*
     
+RUN useradd -m -u 1000 user
+USER user
+ENV PATH="/home/user/.local/bin:$PATH"
+
 WORKDIR /app
 
 COPY --chown=user . .