test: Use bootc image copy-to-storage

Signed-off-by: Xiaofeng Wang <henrywangxf@me.com>

Author: henrywang

tmt/tests/booted/test-install-outside-container.nu

@@ -6,11 +6,9 @@
 use std assert
 use tap.nu
 
-# In this test we install a generic image mainly because it keeps
-# this test in theory independent of starting from a bootc host,
-# but also because it's useful to test "skew" between the bootc binary
-# doing the install and the target image.
-let target_image = "docker://quay.io/centos-bootc/centos-bootc:stream9"
+# Copy the booted image to container storage for use as install source
+bootc image copy-to-storage
+let target_image = "containers-storage:localhost/bootc"
 
 # setup filesystem
 mkdir /var/mnt

tmt/tests/booted/test-install-unified-flag.nu

@@ -12,9 +12,9 @@
 use std assert
 use tap.nu
 
-# Use a generic target image to test skew between the bootc binary doing
-# the install and the target image
-let target_image = "docker://quay.io/centos-bootc/centos-bootc:stream9"
+# Copy the booted image to container storage for use as install source
+bootc image copy-to-storage
+let target_image = "containers-storage:localhost/bootc"
 
 def main [] {
     tap begin "install with experimental unified storage flag"