truncate runDir path name

[MatthewCane]

Fix #67 by reducing the runDir directory name from 57 characters to 29 charaters, preventing the socket path from being more than the maximum of 104 charaters on Unix based systems.

[crazy-max]

Can you remove the issue number from your commit message otherwise it would spam the issue with messages on rebase, thanks!

[MatthewCane]

@crazy-max I've amended the commit message

[crazy-max]

You also need to run docker buildx bake pre-checkin to generate dist, see https://github.com/crazy-max/ghaction-setup-docker/blob/master/.github/CONTRIBUTING.md#submitting-a-pull-request

Commit example chore: update generated content: https://github.com/crazy-max/ghaction-setup-docker/pull/58/commits

[MatthewCane]

Thanks for the pointers! I've followed the guide but I am getting the following error when running docker buildx bake validate: 'ERROR: Build result differs. Please build first with "docker buildx bake build"'.

I've tried running docker buildx bake build as well as removing everything and going through the steps again but I am still getting the error.

I have commited the new dist files anyway, just so you can see what it comes out with but I will amend that commit if I can get the validate step to complete successfully.

[crazy-max]

Thanks for the pointers! I've followed the guide but I am getting the following error when running docker buildx bake validate: 'ERROR: Build result differs. Please build first with "docker buildx bake build"'.

Thanks, did you commit before running validate? This might be related but I will take a look.

[crazy-max]

LGTM thanks!