Reorder Dockerfile for performance

[anarcat]

it's better to install/build whipper at the end of the Dockerfile,
because it will allow us to cache costly operations like locale-gen
while rebuilding with new source changes.

[JoeLametta]

Thanks for the pull request!
I'm not a Docker user but I think cURL can be replaced with wget too (the latter is probably leaner on dependencies): does it make sense?

[anarcat]

On 2018-10-06 03:07:21, JoeLametta wrote: Thanks for the pull request! I'm not a Docker user but I think cURL can be replaced with wget too (the latter is probably leaner on dependencies): does it make sense?

I'd keep such a change separate. But for what it's worth, neither are available as part of the base debian:buster image, and i trust curl more.

[JoeLametta]

Merged, thanks!

i trust curl more.

Fine, let's leave it as is.