Move test directory to top level

This is temporary, it should be under `containers/` just as soon
as we have a manifest setup.

Signed-off-by: Justin Cormack <justin.cormack@docker.com>

test/Makefile

@@ -0,0 +1,23 @@
+default: test.img
+
+RIDDLER=mobylinux/riddler:893c93bf54bc037f6952886330d5ba58746ace37@sha256:3d4a61555110be4b6e8ff6bcdcf5f8aa24d64564eb4162ea4e580d8916d083cc
+
+TEST_IMAGE=mobylinux/test:fc8e36cbd58b5e9078ae6aa57a348ca2fbec76dc@sha256:7155b16109270dc2d950f63279e5a682b2793b83bb26ff70c4783e6d723db5ba
+
+container.tar:
+	docker run --rm -v /var/run/docker.sock:/var/run/docker.sock $(RIDDLER) \
+	  $(TEST_IMAGE) /test --cap-drop all --cap-add SYS_ADMIN -e HOME=/tmp \
+	  -v /tmp:/tmp -v /var/run/docker.sock:/var/run/docker.sock:ro \
+	  -v /usr/bin/docker:/usr/bin/docker:ro \
+	  -v /etc/resolv.conf:/etc/resolv.conf:ro \
+	  --net host --read-only $(TEST_IMAGE) /bin/sh /bin/test.sh >$@
+
+TAR2INITRD_IMAGE=mobylinux/tar2initrd:d5711601eb5b89de0f052d87365e18388ff3f1b5@sha256:58d377e65845f91400e173ce9fca93462f2f237947eef2b0d2c17bb4f2da5ee8
+
+test.img: container.tar
+	cat $^ | docker run --rm --read-only --net=none --log-driver=none --tmpfs /tmp -i $(TAR2INITRD_IMAGE) > $@
+
+clean:
+	rm -f container.tar test.img
+
+.DELETE_ON_ERROR: