[Buildroot] [PATCH] support/testing: add docker / docker-compose tests

[Peter Korsgaard <peter@korsgaard.com>]

>>>>> "ricardo" == ricardo martincoski <ricardo.martincoski@gmail.com> writes:

 > Hello,
 > On Mon, Feb 04, 2019 at 03:11 PM, Matthew Weber wrote:

 >> On Mon, Feb 4, 2019 at 10:56 AM Peter Korsgaard wrote:
 >>> 
 >>> Build for x86-64 as public containers in general are only available for
 >>> x86-64.  Docker needs a number of kernel options enabled, so use a custom
 >>> kernel config based on the qemu one.
 >>> 
 >>> Docker needs entropy at startup, so enable the virtio-rng-pci device to
 >>> expose entropy to the guest.
 >> 
 >> Another option is enabling BR2_PACKAGE_HAVEGED to let the target compensate.

 > This is already used for 2 python test cases (pynacl and crossbar).
 > I don't have specific knowledge to say which is the best approach. For the
 > python test cases I just searched for *any* way to have enough entropy.

I don't think it is really clear cut. Haveged is probably not something
you should be using on a real system, and it only starts up relatively
late so there could be issues with early user space (E.G. I have had
issues with running mkfs.ext4 very early), but the virtio-rng-pci device
is only available for a limited set of qemu targets (E.G. the ones that
emulate a PCI bus).

-- 
Bye, Peter Korsgaard