dynflow on ActiveJob example

run_dynflow.sh

# (re)create DB
DB=dynflow_example; dropdb -U postgres "$DB"; createdb -U postgres "$DB"
# install staff
sudo yum install redis
sudo systemctl enable --now redis
# set DB connection - expect dynflow user with dynflow password
export DB_CONN_STRING='postgres://dynflow:dynflow@/dynflow_example'
# start dynflow with web dashboard
bundle exec ruby ./examples/remote_executor.rb observer
# running dynflow dashboard on http://localhost:4567/dynflow
# running sidekiq dashboard on http://localhost:4567/sidekiq/

# second terminal - start sidekiq runner
sidekiq -r ./examples/remote_executor.rb -C ./examples/sidekiq.yml -q dynflow_orchestrator

# run the example
bundle exec ruby ./examples/remote_executor.rb client