Updated docker images to share scripts

[Ophirr33]

Attempts to resolve#42201. I managed to pull out five scripts (android-base-apt-get, ubuntu16-apt-get, make3, rustbuild-setup, and crosstool-ng). Let me know if there's more I can do or if I should change some names.
r? @malbarbo

[Ophirr33]

Fixes #42201

[TimNN]

Is it possible that you forgot to commit the actual scripts? At least I can't find them in the Github diff.

[Ophirr33]

I did forget to push them, whoops. I just pushed them and then tried to squash the commits, but I don't think I'm squashing them correctly since it shows 3 commits that's trying to merge.

[TimNN]

@Ophirr33: The easiest thing is probably to just do a git reset b695889 and then git add / git commit the changes again. Alternatively just let me know and I can do and push the rebase for you.

[Ophirr33]

Got it, thanks for the help @TimNN!

[arielb1]

What's the status of this? Are you waiting for @malbarbo to review this?

[Ophirr33]

@arielb1 Maybe? I just tagged @malbarbo because he created the issue. Haven't heard anything yet.

Sent from my Samsung SM-G935V using FastHub

[arielb1]

He does not even have r? rights.

r? @alexcrichton

[alexcrichton]

Thanks @Ophirr33!

[alexcrichton]

It's ok to remove these comments, I don't think they necessarily add much to what's already written down

[alexcrichton]

Mind renaming this to include the term "cross" in the script name? I think this list of packages is mostly suitable for building crosstool-ng and such and running that inside the container.

[Ophirr33]

@alexcrichton Done!

[alexcrichton]

@bors: r+

[bors]

📌 Commit 2503461 has been approved by alexcrichton

[bors]

⌛ Testing commit 2503461 with merge 06ffdeb...

[bors]

☀️ Test successful - status-appveyor, status-travis
Approved by: alexcrichton
Pushing 06ffdeb to master...