Chmod operation not allowed in a Gitlab pipeline job

[divaybansal]

nginx/build.go

Line 107 in 4c72106

err = os.Chmod(path, info.Mode()|0060)

The nginx buildpack running in a Gitlab pipeline returns the below error

failed to chmod configuration files: nginx.conf: Operation not permitted

It might be better to create a warning instead of canceling the entire build process and throwing an error. The permissions can be managed by the users themselves.