cd <somewhere>
python3 -m venv env
. env/bin/activate
pip install --upgrade pip
git clone https://github.com/fp4code/djangocms-testsite.git
cd djangocms-testsite
git submodule init
git submodule update --depth 1
pip install -r requirements.txt
deactivate
cd <somewhere>/djangocms-testsite
. ../env/bin/activate
rm db.sqlite3 # if necessary
./manage.py migrate
python starting_site.py
(SITE_ID=1; ./manage.py runserver 8001&)
(SITE_ID=2; ./manage.py runserver 8002&)
Open http://localhost:8001/admin/ or http://localhost:8002/admin/ with admin/admin credentials.