I'm struggling to represent this syntax with CWL:

    vcf-sort -c in_file.vcf > out_file.vcf

Specifically with routing the outfile, as right now, it looks like this will push to stdout.txt.  
I'm sure this is simple, but, guidance is appreciated.

<pre>
cwlVersion: v1.0
class: CommandLineTool
requirements:
  - class: DockerRequirement
    dockerPull: preprocess
inputs: 
  vcf:
    type: File
    inputBinding:
      position: 1
      prefix: -c
outputs: 
  - id: output
    type: File
    outputBinding: 
      glob: "sorted-output.vcf"
baseCommand: vcf-sort
</pre>
    outputs: 
      - id: output
        type: stdout
     
    stdout: sorted-output.vcf

:-)