Edit: credit to exu@feditown.com

Assuming you installed caddy via Debian, Ubuntu, Raspbian method

https://caddyserver.com/docs/install#debian-ubuntu-raspbian

add "cloudsmith/caddy/stable:any-version"; to /etc/apt/apt.conf.d/50unattended-upgrades

Example:

// Automatically upgrade packages from these (origin:archive) pairs
//
// Note that in Ubuntu security updates may pull in new dependencies
// from non-security sources (e.g. chromium). By allowing the release
// pocket these get automatically pulled in.
Unattended-Upgrade::Allowed-Origins {
        "${distro_id}:${distro_codename}";
        "${distro_id}:${distro_codename}-security";
        // Extended Security Maintenance; doesn't necessarily exist for
        // every release and this system may not have it installed, but if
        // available, the policy for updates is such that unattended-upgrades
        // should also install from here by default.
        "${distro_id}ESMApps:${distro_codename}-apps-security";
        "${distro_id}ESM:${distro_codename}-infra-security";
        "${distro_id}:${distro_codename}-updates";
//      "${distro_id}:${distro_codename}-proposed";
//      "${distro_id}:${distro_codename}-backports";
        "cloudsmith/caddy/stable:any-version";
};

Link to comment chain (not sure how to add links in a federated way)

https://feditown.com/comment/1221458

https://bookwormstory.social/post/2100056/4136035

Origional post:

Hi guys anyone know how to use un attended upgrades with caddy.

I have ubuntu server 22.0.4.

The part that stumps me is caddy uses a external repository cloud Smith making ot difficult to setup.

I installed caddy via Debian, Ubuntu, Raspbian

https://caddyserver.com/docs/install#debian-ubuntu-raspbian

The closest example I could find to unattended upgrades with a external repo was this example using docker.

/etc/apt/apt.conf.d/50unattended-upgrades

"Docker:${distro_codename}";

https://blog.coffeebeans.at/archives/1299

I'm not sure if it's as simple as

/etc/apt/apt.conf.d/50unattended-upgrades

"Caddy:${distro_codename}";

Edit:

One more question affect would adding

APT::Unattended-Upgrade::Package-Blacklist "";

/etc/apt/apt.conf.d/20auto-upgrades

have?

Edit2:

I just removed this I only found this from google gemini (which probably isn't the best source of info)

APT::Unattended-Upgrade::Package-Blacklist "";