Collabora works fine first instance but fails for the second

[wwe]

maybe you should switch from double backslash to the single one?

Collabora Document Blank

It may not be the same issue for you, but solved it by changing the collabora docker ‘domain’ variable from: cloud\\.domain\\.com to cloud\.domain\.com Newer versions of Collabora changed how they escape the periods…

using single quote might not require backslash at all (because single quotes take the string “as is”)

I recommend to take a look inside of the container with docker inspect in my installation which work perfect with two Docker Nextcloud 23 instances with fresh Collabora (“collabora/code:21.11.2.4.1”) I see

            "Env": [
                "domain=first.cloud.com|second.cloud.com",

I can’t share the right docker run syntax as my system utilizes docker-compose and .env files (highly recommend this approach over plain docker run)