syscontainers: do not fail if Docker is not running

we added this code to fully resolve the image name, but let's not fail
when it cannot be resolved and use the provided image name.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

Closes: #927
Approved by: rhatdan

Atomic/syscontainers.py

@@ -11,6 +11,7 @@ import stat
 import subprocess
 import time
 from .client import AtomicDocker
+from Atomic.backends._docker_errors import NoDockerDaemon
 from ctypes import cdll, CDLL
 import uuid
 
@@ -1050,12 +1051,16 @@ Warning: You may want to modify `%s` before starting the service""" % os.path.jo
         for i in ["oci:", "http:", "https:"]:
             image = image.replace(i, "")
 
-        with AtomicDocker() as client:
-            fqn_image = util.find_remote_image(client, image) or image
-            if insecure:
-                return ["--insecure"], "docker://" + fqn_image
-            else:
-                return None, "docker://" + fqn_image
+        try:
+            with AtomicDocker() as client:
+                image = util.find_remote_image(client, image) or image
+        except NoDockerDaemon:
+            pass
+
+        if insecure:
+            return ["--insecure"], "docker://" + image
+        else:
+            return None, "docker://" + image
 
     def _skopeo_get_manifest(self, image):
         args, img = self._convert_to_skopeo(image)