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

docs/assets/style.css

@@ -39,13 +39,13 @@ h1 {
   font-size: 1.6em;
 }
 .header .navbar-brand a {
-  background-image: url(https://cdn.jsdelivr.net/gh/dokku/dokku@v0.22.5/docs/assets/dokku.png);
+  background-image: url(https://cdn.jsdelivr.net/gh/dokku/dokku@v0.22.6/docs/assets/dokku.png);
   text-indent: 40px;
 }
 .blurb {
   color: #424242;
   background-color: #ededed;
-  background-image: url(https://cdn.jsdelivr.net/gh/dokku/dokku@v0.22.5/docs/assets/gplaypattern.png);
+  background-image: url(https://cdn.jsdelivr.net/gh/dokku/dokku@v0.22.6/docs/assets/gplaypattern.png);
   padding: 45px 0;
   text-align: center;
 }