On line 67 in get_nifi_flow.py put in your process group name(TODO is to make this parametrized)
Run nifi instances with registry:
docker-compose up
This will launch 2 NiFi environments with 2 NiFi registries Accesible at 127.0.0.1:8082, 127.0.0.1:8083
Run:
./setup_venv.sh
source venv/bin/activate
python get_nifi_flow.py