[feature request] Make configurable pre-commands in user-data possible

[jalbstmeijer]

Hi,

One of the requirements is that Docker needs to be installed on the used AMI.
I would be nice if we could specify pre- commands to be executed in user-data.

Something like this would make it possible to use any AMI

        with:
          pre-command: "yum install -y docker; service docker start"

Also for example here, actions/runner#2511 , it would make it possible to do a workaround like;

        with:
          pre-command: "yum install -y libicu"

Gr, J

[WebsliceNL]

looks like this issue can be closed due to inclusion of the pre-runner-script

#154