docker: how do you guys build it?

[petrosagg]

I noticed that the PKGBUILD for docker uses x86_64 as architecture and I got the "docker is not available for the 'armv6h' architecture" error when I tried to run makepkg on my Pi. How do you build this package?

I know I can change the field to "armv6h" and this is how I've done it for now, but I'm very interested in crosscompiling the package without touching the Pi.