Release 0.22.6

# History

## 0.22.6

Install/update via the bootstrap script:

```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.22.6/bootstrap.sh
sudo DOKKU_TAG=v0.22.6 bash bootstrap.sh
```

### Bug Fixes

- #4295: @josegonzalez Update ps subcommands and triggers

### New Features

- #4286: @josegonzalez Add support for templated CHECKS files
- #4294: @josegonzalez Enhance ssh client logging output
- #4291: @josegonzalez Add log aggregation support via Vector
- #4288: @josegonzalez Add the pid of the dokku process to event logs
- #4289: @josegonzalez Clean precheck tmp file on exit

### Refactors

- #4287: @josegonzalez Refactor parallelized goroutines to use error groups

### Documentation

- #4292: @thomasfedb Update docs to note support for Ubuntu 20.04
- #4293: @ltalirz Fix path in persistent storage docs

### Other

- #4290: @josegonzalez Add support for debug logging plugin trigger stderr and stdout

README.md

@@ -99,8 +99,8 @@ Otherwise, you will need to import the keypair manually after installation using
 To install the latest stable release, run the following commands as a user who has access to `sudo`:
 
 ```shell
-wget https://raw.githubusercontent.com/dokku/dokku/v0.22.5/bootstrap.sh
-sudo DOKKU_TAG=v0.22.5 bash bootstrap.sh
+wget https://raw.githubusercontent.com/dokku/dokku/v0.22.6/bootstrap.sh
+sudo DOKKU_TAG=v0.22.6 bash bootstrap.sh
 ```
 
 You can then proceed to the ip address or domain name associated with your server to complete the web-based installation.