refact: align the starlark interface

[kemingy]

Description

1. the implementation of install.system_packages is apt-get, should we change to install.apt_packages? Also, we have config.apt_source, not config.system_source.
2. runtime.expose(envd_port, host_port), io.copy(src, dest), io.mount(src, dest), should we align the term?
3. config.pip_index(mode, url, extra_url), config.apt_source(mode, source), if mode is not supported yet, should move this parameter to the last one instead of the first one?

---

Message from the maintainers:

Love this enhancement proposal? Give it a 👍. We prioritise the proposals with the most 👍.

[gaocegege]

I totally agree.

Ref #149

/cc @Xuanwo @VoVAllen

[Xuanwo]

1. the implementation of install.system_packages is apt-get, should we change to install.apt_packages?

Agree.

2. runtime.expose(envd_port, host_port), io.copy(src, dest), io.mount(src, dest), should we align the term?

Agree.

3. config.pip_index(mode, url, extra_url), config.apt_source(mode, source), if mode is not supported yet, should move this parameter to the last one instead of the first one?

What does mode mean?

[kemingy]

What does mode mean?

If mode=auto, envd will try to detect the location and choose the nearest mirror.

This hasn't been implemented yet.

[Zheaoli]

the implementation of install.system_packages is apt-get, should we change to install.apt_packages? Also, we have config.apt_source, not config.system_source.

Not sure whether we should support other package management or not. If yes, maybe keep install.system_packages and have different implementation below may be a good idea

[kemingy]

Not sure whether we should support other package management or not. If yes, maybe keep install.system_packages and have different implementation below may be a good idea

The main concern is GPU support. So far as I know, only Ubuntu has good Nvidia support for deep learning.

[Xuanwo]

This hasn't been implemented yet.

I prefer to remove it.

[gaocegege]

This hasn't been implemented yet.

I prefer to remove it.

SGTM.

[VoVAllen]

io.mount -> runtime.mount