Update dockerfile

dockerfile

@@ -8,6 +8,7 @@ WORKDIR /code/
 COPY requirements.txt ./
 
 # Install dependencies. This layer is highly cacheable by BuildKit + GHA setup.
+RUN pip install --upgrade pip 
 RUN pip install --no-cache-dir -r requirements.txt
 
 # Copy the rest of your application code (Changes frequently, invalidates subsequent cache)