Socket Permission Denied Error in seafile container

[justdoit4me]

Hello,
on running the docker the first time I get the
socket.error: [Errno 13] Permission denied
(see also below).
I am able to log in the container as root and can easily reproduce the problem there using the simple python code
import socket
s = socket.socket(socket.AF_UNIX)
So it looks like it is a prblem with the container setup.

I am using the Raspian Buster image...
Any idea how to help me? I run out of ideas...

Many thanks,
Carsten from Germany

No previous version on Seafile configurations found, starting seafile configuration...
Enter the name of the server (3 - 15 letters or digits)
[server name ]: mycloud
Enter the domain OR ip of the server? (For example: www.mycompany.com, 192.168.1.101)
[ip or domain ]: 192.168.28.53
done
Successly create configuration dir /home/seafile/ccnet.

• ccnet configured successfully
  Done.

• seafile configured successfully

• seahub configured successfully
  Operations to perform:
  Synchronize unmigrated apps: wiki, profile, group, help, api2, contacts, staticfiles, share, messages, thumbnail, options, statici18n, compressor, password_session, base, avatar, registration, message, constance, notifications, gunicorn
  Apply all migrations: termsandconditions, database, sessions, invitations, captcha, contenttypes, post_office, institutions
  Synchronizing apps without migrations:
  Creating tables...
  Creating table registration_registrationprofile
  Creating table api2_token
  Creating table api2_tokenv2
  Creating table avatar_avatar
  Creating table avatar_groupavatar
  Creating table base_filediscuss
  Creating table base_filecomment
  Creating table base_userstarredfiles
  Creating table base_userenabledmodule
  Creating table base_groupenabledmodule
  Creating table base_userlastlogin
  Creating table base_commandslastcheck
  Creating table base_innerpubmsg
  Creating table base_innerpubmsgreply
  Creating table base_devicetoken
  Creating table base_clientlogintoken
  Creating table contacts_contact
  Creating table wiki_personalwiki
  Creating table wiki_groupwiki
  Creating table group_groupmessage
  Creating table group_messagereply
  Creating table group_messageattachment
  Creating table group_publicgroup
  Creating table message_usermessage
  Creating table message_usermsglastcheck
  Creating table message_usermsgattachment
  Creating table notifications_notification
  Creating table notifications_usernotification
  Creating table options_useroptions
  Creating table profile_profile
  Creating table profile_detailedprofile
  Creating table share_anonymousshare
  Creating table share_fileshare
  Creating table share_orgfileshare
  Creating table share_uploadlinkshare
  Creating table share_privatefiledirshare
  Running deferred SQL...
  Installing custom SQL...
  Running migrations:
  Rendering model states... DONE
  Applying captcha.0001_initial... OK
  Applying contenttypes.0001_initial... OK
  Applying contenttypes.0002_remove_content_type_name... OK
  Applying database.0001_initial... OK
  Applying institutions.0001_initial... OK
  Applying invitations.0001_initial... OK
  Applying invitations.0002_invitation_invite_type... OK
  Applying invitations.0003_auto_20160510_1703... OK
  Applying invitations.0004_auto_20160629_1610... OK
  Applying invitations.0005_auto_20160629_1614... OK
  Applying post_office.0001_initial... OK
  Applying post_office.0002_add_i18n_and_backend_alias... OK
  Applying post_office.0003_longer_subject... OK
  Applying post_office.0004_auto_20160607_0901... OK
  Applying sessions.0001_initial... OK
  Applying termsandconditions.0001_initial... OK

• seahub database synchronized successfully

• gunicorn configured successfully
  Configuration compleated!
  Starting seafile server...

Starting seafile-server...
Starting seahub...
Seahub running on port 8000
Done
Creating administrator user:
Traceback (most recent call last):
File "seafile-server/seahub/manage.py", line 10, in
execute_from_command_line(sys.argv)
File "/usr/lib/python2.7/site-packages/django/core/management/init.py", line 338, in execute_from_command_line
utility.execute()
File "/usr/lib/python2.7/site-packages/django/core/management/init.py", line 330, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/lib/python2.7/site-packages/django/core/management/base.py", line 390, in run_from_argv
self.execute(*args, **cmd_options)
File "/usr/lib/python2.7/site-packages/django/core/management/base.py", line 441, in execute
output = self.handle(*args, **options)
File "/home/seafile/seafile-server/seahub/seahub/base/management/commands/createsuperuser.py", line 74, in handle
User.objects.get(email=default_username)
File "/home/seafile/seafile-server/seahub/seahub/base/accounts.py", line 86, in get
emailuser = ccnet_threaded_rpc.get_emailuser(email)
File "/usr/local/lib/python2.7/site-packages/pysearpc/client.py", line 110, in newfunc
ret_str = self.call_remote_func_sync(fcall_str)
File "/usr/local/lib/python2.7/site-packages/ccnet/rpc.py", line 71, in call_remote_func_sync
client = self.pool.get_client()
File "/usr/local/lib/python2.7/site-packages/ccnet/pool.py", line 29, in get_client
client = self._create_client()
File "/usr/local/lib/python2.7/site-packages/ccnet/pool.py", line 21, in _create_client
client.connect_daemon()
File "/usr/local/lib/python2.7/site-packages/ccnet/client.py", line 131, in connect_daemon
return self.connect_daemon_with_pipe()
File "/usr/local/lib/python2.7/site-packages/ccnet/client.py", line 105, in connect_daemon_with_pipe
self._connfd = socket.socket(socket.AF_UNIX)
File "/usr/lib/python2.7/socket.py", line 191, in init
_sock = _realsocket(family, type, proto)
socket.error: [Errno 13] Permission denied

==> logs/ccnet.log <==

==> logs/controller.log <==
[01/17/20 06:37:59] seafile-controller.c(154): starting ccnet-server ...
[01/17/20 06:37:59] seafile-controller.c(73): spawn_process: ccnet-server -F /home/seafile/conf -c /home/seafile/ccnet -f /home/seafile/logs/ccnet.log -d -P /home/seafile/pids/ccnet.pid
[01/17/20 06:37:59] seafile-controller.c(88): spawned ccnet-server, pid 27
Version file found in container, checking it
Version is the same, no upgrade needed
Starting seafile server...

Starting seafile-server...
Starting seahub...
Seahub running on port 8000
Done
==> logs/ccnet.log <==

==> logs/controller.log <==
[01/17/20 06:37:59] seafile-controller.c(154): starting ccnet-server ...
[01/17/20 06:37:59] seafile-controller.c(73): spawn_process: ccnet-server -F /home/seafile/conf -c /home/seafile/ccnet -f /home/seafile/logs/ccnet.log -d -P /home/seafile/pids/ccnet.pid
[01/17/20 06:37:59] seafile-controller.c(88): spawned ccnet-server, pid 27
[01/18/20 09:57:22] seafile-controller.c(154): starting ccnet-server ...
[01/18/20 09:57:22] seafile-controller.c(73): spawn_process: ccnet-server -F /home/seafile/conf -c /home/seafile/ccnet -f /home/seafile/logs/ccnet.log -d -P /home/seafile/pids/ccnet.pid
[01/18/20 09:57:22] seafile-controller.c(88): spawned ccnet-server, pid 15