update Dockerfile to limit user access

Dockerfile

@@ -1,22 +1,27 @@
-# read the doc: https://huggingface.co/docs/hub/spaces-sdks-docker
-# you will also find guides on how best to write your Dockerfile
-
 FROM ubuntu:22.04
-# install curl
-RUN apt-get update && apt-get install -y curl && apt-get install -y git && \
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y curl git python3 python3-pip && \
     curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | bash && \
     apt-get install -y git-lfs
 
-WORKDIR /code
-
-RUN git lfs clone https://huggingface.co/AskUI/pta-text-0.1 /code/model/
-
+# Install Python dependencies
 COPY ./requirements.txt /code/requirements.txt
+RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
 
-RUN apt-get install -y python3 python3-pip
+# Create a user, set environment variables, and define work directory
+RUN useradd -m -u 1000 user
+USER user
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH
 
-RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
+WORKDIR $HOME/app
+COPY --chown=user . $HOME/app
 
+# Continue with the rest of the setup
+WORKDIR /code
+
+RUN git lfs clone https://huggingface.co/AskUI/pta-text-0.1 /code/model/
 COPY . .
 
 CMD ["python3", "app.py"]