Switch verification image to use requirements.txt

Author: jthiltges

.github/actions/docker-images-verification/Dockerfile

@@ -4,11 +4,7 @@ FROM python
 
 RUN curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
 RUN python get-pip.py
-RUN pip install \
-      furl \
-      requests \
-      python-dxf \
-      sqlitedict
+RUN pip install -r requirements.txt
 # Copies your code file from your action repository to the filesystem path `/` of the container
 
 COPY entrypoint.sh /entrypoint.sh