Noob question ports already in use

Hello all

I am new to this all, so quite a noob.
i have in the cloud a linux running, i have already one docker container running “adguard” now i want to make another container for “open vpn” but wheni try to install i get error that port 80 is already allocated.
Now i can see adguard is also using port 80. and open vpn needs also to use port 80.
Is there any way to get around this?
if i kill adguard i can run my open vpn but i want to use both

thanks in advance