temporarily migrate to docker hub

.drone.yml

@@ -1,10 +1,10 @@
 pipeline:
   docker:
     image: plugins/docker
-    repo: docker.jcg.re/airsonic
+    repo: docker.io/jcgruenhage/airsonic
     build_args:
       - VERSION=${VERSION}
-    registry: docker.jcg.re
+    registry: docker.io
     secrets: [docker_username, docker_password]
     tags: ${VERSION}
   docker: