diff --git a/piuparts.py b/piuparts.py
index f05db2ff0b7da0d99f1d8d36fa0114d203716428..e9c9934d3c5bce2ca9660697f73bb80905f83a27 100644
--- a/piuparts.py
+++ b/piuparts.py
@@ -46,7 +46,6 @@ import os
 import tarfile
 import stat
 import re
-import json
 import pickle
 import subprocess
 import traceback
@@ -922,15 +921,19 @@ class Chroot:
 
     def setup_from_docker(self, docker_image):
         self.check_if_docker_storage_driver_is_supported()
-        ret_code, output = run(['docker', 'run', '-d', '-it', docker_image, 'bash'])
-        if ret_code != 0:
-            logging.error("Couldn't start the container from '%s'" % docker_image)
-            panic()
-        self.docker_container = output.strip()
-        ret_code, output = run(['docker', 'inspect', self.docker_container])
-        container_data = json.loads(output)[0]
-        self.name = container_data['GraphDriver']['Data']['MergedDir']
-        logging.info("New container created '%s'" % self.docker_container)
+        with tempfile.TemporaryDirectory() as tmpdir:
+            tmp = os.path.join(tmpdir, "cid")
+            ret_code, output = run(['docker', 'run', '-d', '-it', '--cidfile', tmp, docker_image, 'bash'])
+            if ret_code != 0:
+                logging.error("Couldn't start the container from '%s'" % docker_image)
+                panic()
+
+            with open(tmp, "r") as fd:
+                self.docker_container = fd.read().strip()
+
+        ret_code, output = run(['docker', 'inspect', '-f', '{{ .GraphDriver.Data.MergedDir }}', self.docker_container])
+        self.name = output.strip()
+        logging.info("New container created %r at %r", self.docker_container, self.name)
 
     def setup_from_lvm(self, lvm_volume):
         """Create a chroot by creating an LVM snapshot."""