This just gets confusing especially as the helper function doesn't
even take into account any extra files (or the executable). Currently
the actual check just ignores them and also passes the result through
_dockerfile_preprocess so we fix that too.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
 tests/docker/docker.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/tests/docker/docker.py b/tests/docker/docker.py
index c83fd89985..2593a12d04 100755
--- a/tests/docker/docker.py
+++ b/tests/docker/docker.py
@@ -201,8 +201,10 @@ class Docker(object):
 
         tmp_df.write("\n")
         tmp_df.write("LABEL com.qemu.dockerfile-checksum=%s" %
-                     _text_checksum("\n".join([dockerfile] +
-                                    extra_files_cksum)))
+                     _text_checksum(_dockerfile_preprocess(dockerfile)))
+        for f, c in extra_files_cksum:
+            tmp_df.write("LABEL com.qemu.%s-checksum=%s" % (f, c))
+
         tmp_df.flush()
 
         self._do_check(["build", "-t", tag, "-f", tmp_df.name] + argv + \
@@ -317,7 +319,7 @@ class BuildCommand(SubCommand):
                 _copy_binary_with_libs(args.include_executable, docker_dir)
             for filename in args.extra_files or []:
                 _copy_with_mkdir(filename, docker_dir)
-                cksum += [_file_checksum(filename)]
+                cksum += [(filename, _file_checksum(filename))]
 
             argv += ["--build-arg=" + k.lower() + "=" + v
                         for k, v in os.environ.iteritems()
-- 
2.17.1