docs: kadabra is archived

See toolshed/abra#699

docs/abra/hack.md

@@ -30,8 +30,7 @@ Install [Go >= 1.16](https://golang.org/doc/install) and then:
 - `make build` to build. If this fails, run `go mod tidy`.
 - `./abra` to run commands
 - `make test` will run tests
-- `make install-abra` will install abra to `$GOPATH/bin`
+- `make install` will install abra to `$GOPATH/bin`
-- `make install-kadabra` will install kadabra to `$GOPATH/bin`
 - `go get <package>`, `go mod tidy` and `go mod vendor` to add a new dependency
 
 Our [Drone CI configuration](https://git.coopcloud.tech/toolshed/abra/src/branch/main/.drone.yml) runs a number of checks on each pushed commit. See the [Makefile](https://git.coopcloud.tech/toolshed/abra/src/branch/main/Makefile) for more handy targets.
@@ -321,7 +320,7 @@ func main() {
 
 Some tools that are making use of the API so far are:
 
-* [`kadabra`](https://git.coopcloud.tech/toolshed/abra/src/branch/main/cmd/kadabra/main.go)
+* [`kadabra`](https://git.coopcloud.tech/toolshed/kadabra)
 
 ## Cross-compiling
 

docs/operators/tutorial.md

@@ -271,35 +271,6 @@ To upgrade an app manually to the newest available version run:
 abra app upgrade <nextcloud-domain>
 ```
 
-### Automatic Upgrades
-
-`kadabra` the auto-updater is still under development, use it with care and don't use it in production environments. To setup the auto-updater copy the `kadabra` binary to the server and configure a cronjob for regular app upgrades. The following script will configure ssmtp for email notifications and setup a cronjob. This cronjob checks daily for new app versions, notifies if any kind of update is available and upgrades all apps to the latest patch/minor version.
-
-
-```bash
-apt install ssmtp
-
-cat > /etc/ssmtp/ssmtp.conf << EOF
-mailhub=$MAIL_SERVER:587
-hostname=$MAIL_DOMAIN
-AuthUser=$USER
-AuthPass=$PASSWORD
-FromLineOverride=yes
-UseSTARTTLS=yes
-EOF
-
-cat > /etc/cron.d/abra_updater << EOF
-MAILTO=admin@example.com
-MAILFROM=noreply@example.com
-
-0  6 * * *       root    ~/kadabra notify --major
-30 4 * * *       root    ~/kadabra upgrade --all
-EOF
-
-```
-
-Add `ENABLE_AUTO_UPDATE=true` to the env config (`abra app config <app name>`) to enable the auto-updater for a specific app.
-
 ## Finishing up
 
 Hopefully you got something running! Well done! The [operators handbook](/operators/handbook) would probably be the next place to go check out if you're looking for more help. Especially on topics of ongoing maintenance.