feat(server): Add a new configuration variable, runtime_extra_volumes

[ROCKTAKEY]

• This change is worth documenting at https://docs.all-hands.dev/
• Include this change in the Release Notes. If checked, you must provide an end-user friendly description for your change below

End-user friendly description of the problem this fixes or functionality that this introduces.

Add a new configuration variable, runtime_extra_volumes which means extra volumes for bind mounts.
We can bind-mount the host directory in the sandbox container by setting it.
It is useful for Docker outside of Docker since it let us mount /var/run/docker.sock on the sandbox.

---

Give a summary of what the PR does, explaining any non-trivial design decisions.

Add a new configuration variable, runtime_extra_volumes and add document for it.

---

Link of any specific issues this addresses.

None

[tofarr]

Aside from the introduced type error, this looks like a solid change. It should be noted that we have moved away from a mounted volume by default.

[ROCKTAKEY]

@tofarr Thanks for your review. Fix the typing issue.

It should be noted that we have moved away from a mounted volume by default.

I am confused. It means the runtime container does not use mounted volume as workspace, isn't it?

[hamiltop]

There's no issue to 👍 , but I want to chime in and say this would solve many issues for us. Beyond docker in docker, we also would mount a dependency cache volume so we can re-use the outputs of things like bundle install across sandboxes, speeding up setup time significantly.

[enyst]

LTGM 🍰

@tofarr I think your concern has been addressed, could you take a look?

[github-actions]

This PR is stale because it has been open for 30 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[github-actions]

This PR was closed because it has been stalled for over 30 days with no activity.

[enyst]

@ROCKTAKEY I apologize for us dropping the ball here. We could have handled this differently, and I promise I'll try to fix our process.

In the meantime, another PR implemented this slightly differently, in the sandbox section, and this feature is released. Thank you for the contribution, and I'm really sorry for the miss!

[ROCKTAKEY]

@enyst Never mind. I'm glad it was implemented.

I will show the functions implemented for someone who needs the feature: SANDBOX_VOLUMES