Thank you for the reply.
please review all-in-one/reverse-proxy.md at main · nextcloud/all-in-one · GitHub for reverse proxy setup instruction in AiO
- once https access works review if Websocket is enabled/allowed in the reverse proxy.
I did. My caddy config is exactly as per instructions. Caddy does websockets by default.
Please double check networking inside of the container - how requests between CODE and Nextcloud are routed. review Collabora integration guide for implementation details..
The webUI settings are default for the AIO install.
root@docker-1:/home/varun/docker/nextcloud# sudo docker exec -it nextcloud-aio-collabora sh -c “curl -I https://cloud.varunpriolkar.com/status.php”
HTTP/2 200
access-control-allow-origin: *
alt-svc: h3=“:443”; ma=2592000
content-security-policy: default-src ‘self’; script-src ‘self’ ‘nonce-5q/sK6snRKWVerrOlvJtNC2VZkRPqx6WTrxeyQvKyXE=’; style-src ‘self’ ‘unsafe-inline’; frame-src *; img-src * data: blob:; font-src ‘self’ data:; media-src *; connect-src *; object-src ‘none’; base-uri ‘self’;
content-type: application/json
date: Tue, 13 Jan 2026 17:45:05 GMT
referrer-policy: no-referrer
set-cookie: __Host-nc_sameSiteCookielax=true; path=/; httponly;secure; expires=Fri, 31-Dec-2100 23:59:59 GMT; SameSite=lax
set-cookie: __Host-nc_sameSiteCookiestrict=true; path=/; httponly;secure; expires=Fri, 31-Dec-2100 23:59:59 GMT; SameSite=strict
strict-transport-security: max-age=31536000;
via: 1.1 Caddy
via: 1.1 Caddy
x-content-type-options: nosniff
x-frame-options: SAMEORIGIN
x-permitted-cross-domain-policies: none
x-robots-tag: noindex, nofollow
As you can see Nextcloud is reachable from Collabora docker and the webUI says Collabora Online Server is reachable.
Let me know if I should provide logs on something.
Thanks.