enter the container to see the error information of out.log

[root@nextcloud ~]# docker ps -a
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CONTAINER ID  IMAGE                                       COMMAND     CREATED       STATUS           PORTS                                        NAMES
a7c97fb93556  docker.io/onlyoffice/documentserver:latest              30 hours ago  Up 30 hours ago  0.0.0.0:8080->80/tcp, 0.0.0.0:9000->443/tcp  onlyoffice
[root@nextcloud ~]# docker exec -it a7c97fb93556 /bin/bash
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root@a7c97fb93556:/# cd /var/log/onlyoffice/documentserver/converter/
root@a7c97fb93556:/var/log/onlyoffice/documentserver/converter# ls
err.log  out.log-20220729
root@a7c97fb93556:/var/log/onlyoffice/documentserver/converter#

Disabling Document Server Access Authentication
Next, disable access authentication for Document Server, which by default rejects unauthenticated requests (i.e., self-signed HTTPS requests).

I am now running Document Server with Docker, using the docker exec command to log into the container.

There seems to be only the nano editor in the container, but that’s enough.

Open /etc/onlyoffice/documentserver/default.json, go down and find the rejectUnauthorized field and change its value to false.

Restart the container.
Modify default.json

root@a7c97fb93556:/var/log/onlyoffice/documentserver/converter# cd /etc/onlyoffice/
root@a7c97fb93556:/etc/onlyoffice# ls
documentserver  documentserver-example
root@a7c97fb93556:/etc/onlyoffice# cd documentserver
root@a7c97fb93556:/etc/onlyoffice/documentserver# ls
default.json              local.json  production-linux.json
development-linux.json    log4js      production-windows.json
development-mac.json      logrotate   supervisor
development-windows.json  nginx
root@a7c97fb93556:/etc/onlyoffice/documentserver# pwd
/etc/onlyoffice/documentserver
root@a7c97fb93556:/etc/onlyoffice/documentserver#

Modify as follows: “rejectunauthorized”: false

                     "requestDefaults": {
                                "headers": {
                                        "User-Agent": "Node.js/6.13",
                                        "Connection": "Keep-Alive"
                                },
                                "gzip": true,
                                "rejectUnauthorized": false
                        },

Restart container

root@a7c97fb93556:/etc/onlyoffice/documentserver# exit
exit
[root@nextcloud ~]# docker stop a7c97fb93556
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
Error: given PIDs did not die within timeout
[root@nextcloud ~]# docker start a7c97fb93556
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Error: unable to start container "a7c97fb93556650c83dd763f9578705a82f34b2673f9759e8d0ce62afc63e77c": container a7c97fb93556650c83dd763f9578705a82f34b2673f9759e8d0ce62afc63e77c must be in Created or Stopped state to be started: container state improper
[root@nextcloud ~]# reboot

Restart nextcloud

login as: root
[email protected]'s password:
Activate the web console with: systemctl enable --now cockpit.socket

Last login: Fri Jul 29 15:59:59 2022 from 192.168.182.1
[root@nextcloud ~]# setenforce 0
[root@nextcloud ~]# systemctl start https
Failed to start https.service: Unit https.service not found.
[root@nextcloud ~]# systemctl start httpd
Enter TLS private key passphrase for localhost:443 (RSA) : ******
[root@nextcloud ~]# docker ps -a
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
CONTAINER ID  IMAGE                                       COMMAND     CREATED       STATUS      PORTS                                        NAMES
a7c97fb93556  docker.io/onlyoffice/documentserver:latest              31 hours ago  Created     0.0.0.0:8080->80/tcp, 0.0.0.0:9000->443/tcp  onlyoffice
[root@nextcloud ~]# docker start a7c97fb93556
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
a7c97fb93556
[root@nextcloud ~]#

Start onlyoffice

run as prompted

[root@nextcloud ~]# sudo docker exec a7c97fb93556 sudo supervisorctl start ds:example
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
sudo: unable to send audit message: Operation not permitted
ds:example: started

Successfully opened word document