Support `--workdir`, `--env`, `--hostname` command lines just like docker run

[edubart]

Context

The cartesi machine cli is gradually adding new Docker like command line options such as --volume and --network, a few handy and very easy ones to implement are --workdir, --env and --hostname, they all can become handy when using the cli in the terminal.

Subtasks

• [x] --workdir
• [x] --env
• [x] --hostname