Update Dockerfile to use poetry

Dockerfile

@@ -7,11 +7,15 @@ WORKDIR /usr/src/app
 # Copy the current directory contents into the container at /usr/src/app
 COPY . /usr/src/app
 
-# Install any needed packages specified in requirements.txt
-RUN pip install --no-cache-dir -r requirements.txt
+# Install Poetry
+RUN pip install --no-cache-dir poetry
+
+# Use Poetry to install dependencies
+RUN poetry config virtualenvs.create false \
+  && poetry install --no-interaction --no-ansi
 
 # Make port 80 available to the world outside this container
 ENV PORT="8080"
 
 # Run app.py when the container launches
-CMD exec gunicorn --bind :$PORT --workers 2 --timeout 0  --worker-class uvicorn.workers.UvicornWorker  --threads 8 main:app
+CMD exec gunicorn --bind :$PORT --workers 2 --timeout 0  --worker-class uvicorn.workers.UvicornWorker  --threads 8 main:app