Investigate the use of init process for tools container

[g-gaston]

What would you like to be added: Coming from here https://github.com/aws/eks-anywhere/issues/1116

Check if adding --init to our docker run command for the tools container can help with stuck containers

Why is this needed: From docker docs:

You can use the --init flag to indicate that an init process should be used as the PID 1 in the container. Specifying an init process ensures the usual responsibilities of an init system, such as reaping zombie processes, are performed inside the created container.