Update dockerfile

Author: Ornella33

server/example_configurations/access_control/general/filter_server/Dockerfile

@@ -3,7 +3,7 @@ FROM python:3.12-slim
 RUN pip install --no-cache-dir flask requests
 
 WORKDIR /app
-COPY app.py .
+COPY ./server/example_configurations/access_control/general/filter_server/app.py ./
 
 ENV UPSTREAM_REPOSITORY_URL="http://repository:80"
 ENV POLICY_DATA_PATH="/policies/data.json"