OpenEMR supoort on Synology running DSM 7

Situation
not able to access OpenEMR after installing on docker

OpenEMR Version
I’m using OpenEMR version 6.1.0

Browser:
I’m using: Brave

Operating System
I’m using: DSM 7

Logs
Did you check the logs?
AH00558: httpd: Could not reliably determine the server’s fully qualified domain name, using 172.17.0.4. Set the ‘ServerName’ directive globally to suppress this message

Hello
I’m using Synology DS1813+, DSM 7, Apache 2.4, PHP 7.4 MariaDB 10, for this setup,
So there is no support of any kind available online for installing step by step and running OpenEMR on Synology through Docker. I’ve used Docker on my Synology before and it’s very simple to run anything, just hit download, then Launch and it works. I did exactly that with OpenEMR, clicked download on OpenEMR official image repository selected version 6.1.0 and after download clicked launch which started container and showing up that it’s running normal, but what happens after that? how do I access the website? or what is the next step if any after running container? there is no info anywhere.
I entered default localhost address and nothing comes. can anybody guide me what are actual steps doing this or correct me if I did anything wrong?
oh btw container crashes every time I go to terminal through container details page and error log gives out following error:
AH00558: httpd: Could not reliably determine the server’s fully qualified domain name, using 172.17.0.4. Set the ‘ServerName’ directive globally to suppress this message

any help is appreciated thanks