Add application file

Dockerfile

@@ -1,7 +1,10 @@
 FROM python:3.9-slim
+RUN mkdir -p /home/user/app_cache
+
 WORKDIR /app
-COPY requirements.txt .
-RUN pip install --no-cache-dir -r requirements.txt
-COPY app.py .
-EXPOSE 8080
-CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "8080"]
+
+COPY --chown=user ./requirements.txt requirements.txt
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
+
+COPY --chown=user . /app
+CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]