Update Dockerfile

Dockerfile

@@ -135,8 +135,6 @@ RUN groupadd -g 1000 appuser 2>/dev/null || true && \
     id -u 1000 >/dev/null 2>&1 || useradd -u 1000 -g 1000 -m -s /bin/bash appuser && \
     chown -R 1000:1000 /app
 
-USER 1000:1000
-
 RUN apt-get remove -y --purge \
       libgl1-mesa-dev \
       mesa-common-dev \
@@ -148,4 +146,6 @@ RUN apt-get remove -y --purge \
     && apt-get autoremove -y \
     && rm -rf /var/lib/apt/lists/*
 
+USER 1000:1000
+
 WORKDIR /app/danser