Can free and open source software projects like Caddy and Traefik eventually replace EFF’s Certbot? Although Certbot continues to be developed, we think tools like these help offer a promising path forward in the further development of a secure and encrypted web. For some users, tools like these...
Personally, I followed the instructions to install Caddy with Docker Compose in the Nextcloud AIO reverse proxy documentation. Regarding building custom images, there are the instructions to build a custom Caddy image in a Dockerfile in the Docker Hub page.
Yep, I think that’s what I found too. I set it up to use nextcloud aio as well, it just took me a while to find that docker page