Ghost 6 + Docker: ActivityPub setup issue

Developer help Self-hosting
1

Hi ! For the upgrade to Ghost 6, I decided to switch to Docker on my VPS in order to easily use Tinybird and the Network (ActivityPub). In the end, I think I’ve installed everything correctly, and here’s my Caddyfile below.

{$DOMAIN} {
    encode gzip

    route {
        # Tinybird tracker
        handle_path /.ghost/analytics/* {
            reverse_proxy http://traffic-analytics:3000
        }

        # ActivityPub
        handle /.ghost/activitypub/* {
            reverse_proxy {$ACTIVITYPUB_TARGET}
        }
        handle /.well-known/webfinger* {
            reverse_proxy {$ACTIVITYPUB_TARGET}
        }
        handle /.well-known/nodeinfo* {
            reverse_proxy {$ACTIVITYPUB_TARGET}
        }
        handle /.well-known/host-meta* {
            reverse_proxy {$ACTIVITYPUB_TARGET}
        }

        # Fallback 
        handle {
            reverse_proxy http://ghost:2368
        }
    }
}

www.{$DOMAIN} {
    redir https://{$DOMAIN}{uri} 301
}

$ACTIVITYPUB_TARGET = https://ap.ghost.org

The issue is with the Network: I’m not sure if I’ve really understood how ActivityPub works. The Reader page returns “page not found,” and the profile returns “profile not found.” Other pages (explore, etc.) are accessible.

/ghost/#/activitypub/reader

reader
reader1920×999 134 KB

/ghost/#/activitypub/profile

profile
profile1920×999 116 KB

/ghost/#/activitypub/explore

explore
explore1920×999 257 KB

The owner of my site, whose slug is jbb, returns “index” on ActivityPub. Its supposed to be @index@domain.com.

user@vps:/opt/blog$ curl -sL -H 'Accept: application/jrd+json, application/json' \
  "https://$DOMAIN/.well-known/webfinger?resource=acct:jbb@$DOMAIN" \
| jq -r '.subject, (.aliases[]? // empty), (.links[]? | select(.rel=="self") | .href)'
acct:index@$DOMAIN
https://$DOMAIN/.ghost/activitypub/users/index
https://$DOMAIN/.ghost/activitypub/users/index

So I’m not really sure what to do or whether I’ve understood how ActivityPub works. I find it strange that you can’t choose anything other than “index,” and I don’t understand why the reader and profile pages aren’t displaying. If I don’t find a solution, I think I’ll just disable the network.
Thanks for your help.

2

So it seems this is a browser-related issue with Chrome…
On Firefox I can see the reader (still empty for now) as well as the profile, and I can also change the ActivityPub slug.
I’ll probably wait until this feature is a bit better integrated in the upcoming versions!
Even if I can change the profile with Firefox, it isn’t loaded in Chrome.