fix docker

Dockerfile

@@ -1,12 +1,11 @@
 FROM python:3.9
-
 RUN useradd -m -u 1000 user
 USER user
-
+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
+RUN pip install --no-cache-dir --upgrade pip
+RUN pip install --no-cache-dir -r requirements.txt
+COPY --chown=user ./app.py app.py
+EXPOSE 7860
 CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]