Add a test for mkimage

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

test/cases/040_packages/001_mkimage/mkimage.yml

@@ -0,0 +1,26 @@
+kernel:
+  image: "linuxkit/kernel:4.9.x"
+  cmdline: "console=ttyS0"
+init:
+  - linuxkit/init:cbd7ae748f0a082516501a3e914fa0c924ee941e
+  - linuxkit/runc:24dfe632ed3ff53a026ee3fac046fd544434e2d6
+  - linuxkit/containerd:f1130450206d4f64f0ddc13d15bb68435aa1ff61
+onboot:
+  - name: mkimage
+    image: "linuxkit/mkimage:8bb18fe306afaca9ba50fe3148ec12570586c2a6"
+  - name: poweroff
+    image: "linuxkit/poweroff:a8f1e4ad8d459f1fdaad9e4b007512cb3b504ae8"
+files:
+  - path: data/kernel
+    source: run-kernel
+  - path: data/initrd.img
+    source: run-initrd.img
+  - path: data/cmdline
+    source: run-cmdline
+trust:
+  image:
+    - linuxkit/kernel
+    - linuxkit/binfmt
+    - linuxkit/rngd
+outputs:
+  - format: kernel+initrd

test/cases/040_packages/001_mkimage/run.yml

@@ -0,0 +1,18 @@
+kernel:
+  image: "linuxkit/kernel:4.9.x"
+  cmdline: "console=ttyS0"
+init:
+  - linuxkit/init:cbd7ae748f0a082516501a3e914fa0c924ee941e
+  - linuxkit/runc:24dfe632ed3ff53a026ee3fac046fd544434e2d6
+  - linuxkit/containerd:1c71f95fa36040ea7e987deb98a7a2a363853f01
+  - linuxkit/ca-certificates:4e9a83e890e6477dcd25029fc4f1ced61d0642f4
+onboot:
+  - name: poweroff
+    image: "linuxkit/poweroff:a8f1e4ad8d459f1fdaad9e4b007512cb3b504ae8"
+trust:
+  image:
+    - linuxkit/kernel
+    - linuxkit/binfmt
+    - linuxkit/rngd
+outputs:
+  - format: kernel+initrd

test/cases/040_packages/001_mkimage/test.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+# SUMMARY: Test the mkimage container by using it to build a bootable qcow2
+# LABELS:
+# REPEAT:
+
+set -e
+
+# Source libraries. Uncomment if needed/defined
+#. "${RT_LIB}"
+. "${RT_PROJECT_ROOT}/_lib/lib.sh"
+
+clean_up() {
+	find . -iname "run*" -not -iname "*.yml" -exec rm -rf {} \;
+	find . -iname "mkimage*" -not -iname "*.yml" -exec rm -rf {} \;
+	rm -f disk.qcow2
+}
+trap clean_up EXIT
+
+# Test code goes here
+moby build run.yml
+moby build mkimage.yml
+linuxkit run qemu -disk-size 200 -disk-format qcow2 -disk disk.qcow2 -kernel mkimage
+linuxkit run qemu disk.qcow2
+
+exit 0