Update Dockerfile

Dockerfile

@@ -7,8 +7,11 @@
 ARG PYTHON_VERSION=3.8
 FROM python:${PYTHON_VERSION}-slim as base
 
-# Install dependencies and utilities
-RUN python -m pip install rasa
+# Copy the requirements file into the container.
+COPY requirements.txt .
+
+# Install the dependencies from the requirements file.
+RUN python -m pip install --no-cache-dir -r requirements.txt
 
 # Prevents Python from writing pyc files.
 ENV PYTHONDONTWRITEBYTECODE=1