package/skopeo: use containers-image-config files

... and extend the skopeo runtime test to make use of those.

Signed-off-by: Yann E. MORIN <yann.morin@orange.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/skopeo/Config.in

@@ -8,6 +8,7 @@ config BR2_PACKAGE_SKOPEO
 	depends on !BR2_STATIC_LIBS  # lvm2
 	select BR2_PACKAGE_HOST_GO
 	select BR2_PACKAGE_BTRFS_PROGS
+	select BR2_PACKAGE_CONTAINERS_IMAGE_CONFIG  # runtime
 	select BR2_PACKAGE_LIBGPGME
 	select BR2_PACKAGE_LVM2
 	help

support/testing/tests/package/test_skopeo.py

@@ -32,6 +32,20 @@ class TestSkopeo(infra.basetest.BRTest):
         bb_info = json.loads("".join(output))
         self.assertEqual(bb_info["Name"], "docker.io/library/busybox")
 
+        # Then check we can retrieve the image from the default registry
+        # Copy all archs in the image to check we can enumerate those (inspect
+        # does not enumerate all archs)
+        self.assertRunOk(
+            "skopeo copy -a docker://busybox:latest oci-archive:busybox-latest.oci",
+            timeout=120,
+        )
+
+        # Check we can inspect a local OCI archive
+        self.assertRunOk(
+            "skopeo inspect oci-archive:busybox-latest.oci",
+            timeout=30,
+        )
+
         # Now, check we can reach an arbitrary registry: quay.io
         output, _ = self.emulator.run(
             "skopeo inspect docker://quay.io/quay/busybox:latest",
@@ -39,3 +53,9 @@ class TestSkopeo(infra.basetest.BRTest):
         )
         skopeo_info = json.loads("".join(output))
         self.assertEqual(skopeo_info["Name"], "quay.io/quay/busybox")
+
+        # Finally check we can retrieve the image from an arbitrary registry
+        self.assertRunOk(
+            "skopeo copy docker://quay.io/quay/busybox:latest oci-archive:busybox-quay.io-latest.oci",
+            timeout=120,
+        )