update docker file

Dockerfile

@@ -1,29 +1,28 @@
 FROM python:3.10.12
 
+# always create the user first and add
+# to avoid the permission issue when editing the files later especially
+# if you want to use the dev mode
 RUN useradd -m -u 1000 user
 
+# define the directory and install packages
 WORKDIR /app
 COPY ./packages.txt /app/packages.txt
 RUN apt-get update && xargs -r -a packages.txt apt-get install -y && rm -rf /var/lib/apt/lists/*
 
-# create user
-
-#USER user
-#ENV HOME=/home/user \
-#    PATH=/home/user/.local/bin:$PATH
-
-# setting workdir
-# WORKDIR $HOME/app
-
+# copy the requirements to container and install them
 COPY --chown=user ./requirements.txt requirements.txt
-#COPY --chown=user ./packages.txt packages.txt
-
 RUN pip3 install --no-cache-dir -r requirements.txt
-#RUN apt-get update && xargs -r -a packages.txt apt-get install -y && rm -rf /var/lib/apt/lists/*
 
+# Copy the current directory contents into the container at /app setting the owner to the user
+#COPY --chown=user . /app
 
-COPY --chown=user . /app
+COPY --link --chown=1000 ./ /app
 
+# app will need to expose the port for taking browser inputs
+# make sure to have same port as mentioned in Readme.md
+# rest of the code is from https://huggingface.co/spaces/SpacesExamples/streamlit-docker-example/blob/main/Dockerfile
+# sepcific for streamlit docker
 EXPOSE 8501
 CMD streamlit run app.py \
     --server.headless true \

app.py

@@ -1,5 +1,5 @@
 import streamlit as st
-import os
+
 with st.sidebar:
     # upload and example doc
     choice = st.sidebar.radio(label = 'Select the Document',