Update Dockerfile

Dockerfile

@@ -1,14 +1,20 @@
-FROM python:3.11-slim
-
-ENV PYTHONUNBUFFERED=1
+# Use an official Python runtime as a parent image
+FROM python:3.9-slim
 
+# Set the working directory in the container
 WORKDIR /app
 
-COPY requirements.txt /app/
+# Copy the requirements file into the container at /app
+COPY requirements.txt .
+
+# Install any needed packages specified in requirements.txt
 RUN pip install --no-cache-dir -r requirements.txt
 
-COPY main.py /app/
+# Copy the main application file into the container at /app
+COPY main.py .
 
+# Make port 8000 available to the world outside this container
 EXPOSE 8000
 
+# Run main.py when the container launches
 CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]