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Remove references to Qemu requirements in multiarch documentation 

It is not actually required to have qemu inside of the container as binfmt_misc uses qemu on the host to function.
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Justin 2018-06-18 19:12:35 -07:00 committed by GitHub
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21
docker-for-mac/multi-arch.md
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@ -11,13 +11,12 @@ Docker for Mac provides `binfmt_misc` multi architecture support, so you can run
containers for different Linux architectures, such as `arm`, `mips`, `ppc64le`,
and even `s390x`.
This should just work without any configuration, but the containers you run need
to have the appropriate `qemu` binary inside before you can do
this. (See <a href="http://wiki.qemu.org/" target="_blank">QEMU</a> for more
information.)
This does not require any special configuration in the container itself as it uses
<a href="http://wiki.qemu.org/" target="_blank">qemu-static</a> from the Docker for
Mac VM.
So, you can run a container that already has this set up, like the <a
href="https://resin.io/how-it-works/" target="_blank">resin</a> arm builds:
You can run an ARM container, like the <a href="https://resin.io/how-it-works/" target="_blank">
resin</a> arm builds:
```
$ docker run resin/armv7hf-debian uname -a
@ -30,10 +29,6 @@ Linux edd13885f316 4.1.12 #1 SMP Tue Jan 12 10:51:00 UTC 2016 ppc64le GNU/Linux
```
Running containers pre-configured with `qemu` has the advantage that you can use
these to do builds `FROM`, so you can build new Multi-CPU architecture packages.
Alternatively, you can bind mount in the `qemu` static binaries to any
cross-architecture package, such as the semi-official ones using a script like
this one [https://github.com/justincormack/cross-docker](https://github.com/justincormack/cross-docker). (See the README at the
given link for details on how to use the script.)
Multi architecture support makes it easy to build <a href="https://blog.docker.com/2017/11/multi-arch-all-the-things/" target="_blank">
multi architecture Docker images</a> or experiment with ARM images and binaries
from your Mac.