ONLYOFFICE Developer Edition demo issue - error downloadFile

I installed and run OnlyOffice docker image on my local windows machine with this command:

docker run -i -t -d -p 9950:80 --restart=always -v C:/work/only_office/logs:/var/log/onlyoffice onlyoffice/documentserver-de

Then run commands described on this page - http://localhost:9950/welcome/ for testing OnlyOffilce:

docker exec 2a9aa47c18a2 sudo supervisorctl start ds:example
docker exec 2a9aa47c18a2 sudo sed "s,autostart=false,autostart=true," -i /etc/supervisor/conf.d/ds-example.conf

This page - http://localhost:9950/example/ starts working. But when I try to create, open or upload document I am getting this error:
And errors in the log files:

[2020-07-07T12:30:24.892] [ERROR] nodeJS - error downloadFile:url=http://127.0.0.1:9950/example/files/172.17.0.1/new%20(2).docx;attempt=1;code:ECONNREFUSED;connect:null;(id=172.17.0.1http___127.0.0.1_9950_example_files_172.17.0.1_new_20_2_.docx1594125018845)
Error: connect ECONNREFUSED 127.0.0.1:9950
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1107:14)
[2020-07-07T12:30:25.894] [ERROR] nodeJS - error downloadFile:url=http://127.0.0.1:9950/example/files/172.17.0.1/new%20(2).docx;attempt=2;code:ECONNREFUSED;connect:null;(id=172.17.0.1http___127.0.0.1_9950_example_files_172.17.0.1_new_20_2_.docx1594125018845)
Error: connect ECONNREFUSED 127.0.0.1:9950
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1107:14)
[2020-07-07T12:30:26.897] [ERROR] nodeJS - error downloadFile:url=http://127.0.0.1:9950/example/files/172.17.0.1/new%20(2).docx;attempt=3;code:ECONNREFUSED;connect:null;(id=172.17.0.1http___127.0.0.1_9950_example_files_172.17.0.1_new_20_2_.docx1594125018845)
Error: connect ECONNREFUSED 127.0.0.1:9950
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1107:14)

[2020-07-07T12:30:24.881] [ERROR] nodeJS - postData error: docId = 172.17.0.1http___127.0.0.1_9950_example_files_172.17.0.1_new_20_2_.docx1594125018845;url = http://127.0.0.1:9950/example/track?filename=new%20(2).docx&useraddress=172.17.0.1;data = {"key":"172.17.0.1http___127.0.0.1_9950_example_files_172.17.0.1_new_20_2_.docx1594125018845","status":1,"users":["uid-1"],"actions":[{"type":1,"userid":"uid-1"}]}
Error: connect ECONNREFUSED 127.0.0.1:9950
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1107:14)

I tried to switch off firewall and test it on another Windows PC but the issue is the same. Any ideas how to fix it?

According to support's answer the current last version (5.5.3) of OnlyOffice is not working on Windows docker:

Unfortunately, at the moment we do not recommend using this method of installing Document Server. If you would like to use a docker installation, please use this Document Server installation guide on *NIX systems.

I run docker image on CentOs server. Now everything is working as expected.