Migrate "TaskBoot docker build using Docker in Docker" CI task from docker-worker to generic-worker

[petemoore]

This migrates the broken docker-in-docker docker-worker task to generic-worker.

[community-tc-integration]

Uh oh! Looks like an error! Details

InterpreterError at template.tasks[2].payload.command[0][2]: unknown context value HOME

[petemoore]

Hi @marco-c

This fixes one of the two broken CI tasks. Many thanks to @lotas - we worked on this fix together, although it only bears my name as author. We set up a generic-worker/ubuntu pool for your project and migrated the dind task over to generic-worker to workaround the issues with dind on docker-worker.

[marco-c]

Thanks @petemoore and @lotas!
The task currently failing is the task that tries to run the image generated by the task you fixed, maybe the "fix" is simply removing "features: dind: true"? Can we keep using docker-worker for the downstream task? We are using task-boot in a few projects, so I'd prefer having to move the smallest number of tasks possible to generic-worker.

[marco-c]

Thanks!