Jenkins Pipeline docker.build() gives error '“docker build” requires exactly 1 argument(s)'

Question

With this minimal Jenkins Pipeline script

node {
  docker.build(\"foo\", \"--build-arg x=y\")
}

I\'m getting a confusing error

Answer 1

My confusion was because the error message is actually coming from Docker, not Jenkins.

Docker gives this error if you don't specify a build context (as noted in the docs above).

The fix is just to add . to the end of the args parameter as per the example, eg:

node {
  docker.build("foo", "--build-arg x=y .")
}

See docker: "build" requires 1 argument. See 'docker build --help'