I noticed today while trying something like the below code that cat just gets passed to the entrypoint that the image was built with. I think that it is the container = dockerClient.run(env, step.image, step.args, ws, volumes, volumesFromContainers, envReduced, dockerClient.whoAmI(), /* expected to hang until killed */ "cat"); line. Would it be better to override the entrypoint=/bin/cat instead of passing cat as the argument?

My current workaround is to build a custom image and set the CMD line in the docker file instead of having the entrypoint set.

def terraform(String tfArgs) {
  def dockerArgs = "-v ${workingDirectory}/:${tempDirectory}/ \
      -e AWS_ACCESS_KEY_ID -e AWS_SECRET_ACCESS_KEY "
  def dockerBuildImage = docker.image("hashicorp/terraform:${TF_VERSION}").inside(dockerArgs) {
    sh "echo Starting Terraform with args: ${tfArgs}"
    sh "/bin/terraform ${tfArgs}"
  }
  // sh "docker run --rm -v ${workingDirectory}/:${tempDirectory}/ -w=${tempDirectory}/ -e AWS_ACCESS_KEY_ID -e AWS_SECRET_ACCESS_KEY hashicorp/terraform:${TF_VERSION} ${tfArgs}"
}