diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 776bc61..a0fe016 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,12 +1,12 @@
-# You can override the included template(s) by including variable overrides
-# SAST customization: https://docs.gitlab.com/ee/user/application_security/sast/#customizing-the-sast-settings
-# Secret Detection customization: https://docs.gitlab.com/ee/user/application_security/secret_detection/#customizing-settings
-# Dependency Scanning customization: https://docs.gitlab.com/ee/user/application_security/dependency_scanning/#customizing-the-dependency-scanning-settings
-# Note that environment variables can be set in several places
-# See https://docs.gitlab.com/ee/ci/variables/#cicd-variable-precedence
-stages:
-- test
-sast:
-  stage: test
-include:
-- template: Security/SAST.gitlab-ci.yml
+build:
+  image: docker:20
+  stage: build
+  services:
+    - docker:20-dind
+  variables:
+    IMAGE_TAG: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
+  script:
+    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    - docker buildx build --push --platform linux/amd64 --tag $IMAGE_TAG .
+    - docker buildx build --push --platform linux/arm64 --tag $IMAGE_TAG .
+
diff --git a/reader.py b/reader.py
index cc98085..b4ede0a 100644
--- a/reader.py
+++ b/reader.py
@@ -6,6 +6,8 @@ import subprocess
 import time
 import re
 import fcntl
+import traceback
+import json
 
 CDROM_DRIVE_STATUS = 0x5326
 CDS_NO_INFO = 0
@@ -51,6 +53,7 @@ class Reader(threading.Thread):
                         print("Can't handle disc type %d" % rv)
                 except Exception as e:
                     print("Error in disc handler:", e)
+                    print(traceback.format_exc())
                 self.eject()
             else:
                 time.sleep(3)
@@ -69,7 +72,7 @@ class Reader(threading.Thread):
         self.status["state"] = "finished read"
         fn = os.path.join(self.directory, "video", self.status["title"], "sucker.json")
         newfn = fn + ".new"
-        with open(newfn, "wb") as fout:
+        with open(newfn, "w") as fout:
             json.dump(obj=self.status, fp=fout)
         os.rename(src=newfn, dst=fn)
 
@@ -86,7 +89,7 @@ class Reader(threading.Thread):
         p = subprocess.run(
             [
                 "dvdbackup", 
-                "--input=" + self.path,
+                "--input=" + self.device,
                 "--info", 
             ], 
             encoding="utf-8",
@@ -119,7 +122,7 @@ class Reader(threading.Thread):
         p = subprocess.Popen(
             [
                 "dvdbackup",
-                "--input=" + self.path,
+                "--input=" + self.device,
                 "--name=" + title,
                 "--mirror",
                 "--progress",