Add git to python-slim for docker image (CI)

Dockerfile

@@ -7,6 +7,9 @@ WORKDIR /code
 # Copy the requirements file to the working directory
 COPY ./requirements.txt /code/requirements.txt
 
+RUN apt-get update
+RUN apt-get install -y git
+
 # Install the Python dependencies
 RUN pip config --user set global.progress_bar off
 RUN pip install --no-cache-dir --prefer-binary -r /code/requirements.txt