PowerCli, Docker And The Dollar Sign

You can execute vSphere's Powercli from your Linux box, without the need to run Windows. Beautiful, isn't it? And gets better: there is a docker image for that (reference). It's as easy as:

docker run --rm -it --entrypoint='/usr/bin/powershell' vmware/powerclicore

But then you create a docker-composer file and want to execute a cmdlet that has a dollar sign ($) diretcly Docker's entrypoint. Didn't find the solution on the web. Only by chance, and after few hours of trial and error, the beauty is revealed: have to double scape the dollar sign.

Turn this:

entrypoint: |
  bash -c '/usr/bin/powershell <<EOF
    Set-PowerCLIConfiguration -InvalidCertificateAction Ignore -Confirm:$false
...
 EOF'

Into this:

entrypoint: |
  bash -c '/usr/bin/powershell <<EOF
    Set-PowerCLIConfiguration -InvalidCertificateAction Ignore -Confirm:\$$false
...
 EOF'

And there you go.

(Issue reported on Docker PowerCli Github)