ci(docker): fix default 1000 user

Dockerfile

@@ -2,7 +2,7 @@
 
 FROM nvidia/cuda:12.9.0-cudnn-runtime-ubuntu24.04
 
-ENV RUNNING_IN_DOCKER true
+ENV RUNNING_IN_DOCKER=true
 
 RUN apt-get update
 RUN apt-get install -y \
@@ -17,22 +17,20 @@ RUN apt-get install -y \
   wget
 RUN rm -fr /var/lib/apt/lists/*
 
-RUN useradd -m -u 1000 user
-
 WORKDIR /app
-RUN chown user /app
+RUN chown 1000:1000 /app
 RUN chmod 755 /app
 
-USER user
-ENV PATH="/home/user/.local/bin:$PATH"
+USER 1000
+# ENV PATH="/home/user/.local/bin:$PATH"
 RUN sh -c "$(wget -O- https://github.com/deluan/zsh-in-docker/releases/download/v1.2.1/zsh-in-docker.sh)"
 RUN curl -LsSf https://astral.sh/uv/install.sh | sh
 
-COPY --chown=user . /app
+COPY --chown=1000:1000 . /app
 
 RUN ls -la /app
 
-ENV UV_NO_CACHE="1"
+ENV UV_NO_CACHE=true
 RUN uv venv
 RUN uv sync