cd test-ground
testground plan import --from . --name test-ground
# this will pass
testground run single --plan=test-ground --testcase=many --builder=docker:generic --runner=local:docker --instances=4 --wait 
# this will hang in 1st pub
testground run single --plan=test-ground --testcase=one --builder=docker:generic --runner=local:docker --instances=4 --wait