not so specific guide how to run core on a specific branch

run_core.sh

# assuming you have pyhton 3.7-stretch

DIR=./

git clone --branch tags/0.14.3 git@github.com:RasaHQ/rasa_core.git $DIR \
  && cd $DIR 
  
pip install pip==19.1
pip install -r requirements.txt


# you cannot run server without a domain
python -m rasa_core.train -d examples/concertbot/domain.yml -s examples/concertbot/data/stories.md -o test
python -m rasa_core.run -d test --enable_api -p 5002