update docker

DockerFile

@@ -1,11 +1,13 @@
 FROM python:3.9
+
 RUN useradd -m -u 1000 user
 USER user
-ENV HOME=/home/user \
-    PATH=/home/user/.local/bin:$PATH
-WORKDIR $HOME/app
-COPY --chown=user • $HOME/app
-COPY •/requirements.txt ~/app/requirements.txt
-RUN pip install -r requirements.txt
-COPY . .
+ENV PATH="/home/user/.local/bin:$PATH"
+
+WORKDIR /app
+
+COPY --chown=user ./requirements.txt requirements.txt
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
+
+COPY --chown=user . /app
 CMD ['LITERAL_API_KEY="lsk_fVGJM7vFiOMrfjAnCpl13fWDstN089h2c5wI6aRuHuw"',"chainlit", "run", "app.py", "--port", "7860"]