How to run a concourse task

问题

I am new in the community, I am working with concourse and I have the next issue running a yml file in terminal using fly:

command $: sudo fly -t ci execute -c task.yml

I get the following error:

initializing Backend error: Exit status: 500, message:
{"Type":"","Message":"runc exec: exit status 1: exec failed: container_linux.go:348: starting container process caused \"chdir to cwd (\"/root\") set in config.json failed: permission denied\"\n","Handle":"","ProcessID":""}

Please help if anyone can help me!

来源：https://stackoverflow.com/questions/50029181/how-to-run-a-concourse-task