Release 0.23.7

# History

## 0.23.7

Install/update via the bootstrap script:

```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.23.7/bootstrap.sh
sudo DOKKU_TAG=v0.23.7 bash bootstrap.sh
```

### Bug Fixes

- #4421: @josegonzalez Keep the git directory for worktree-enabled installations

### New Features

- #4420: @josegonzalez Add ability to specify X-Forwarded-Ssl header for proxied requests

### Documentation

- #4422: @josegonzalez Add warning regarding shallow clone pushes
- #4417: @andrewk17 Correct vector sink example command
- #4414: @josegonzalez Use correct html for offsite digitalocean link
- #4413: @josegonzalez Fix SSL documentation link in troubleshooting docs

### Other

- #4423: @josegonzalez Drop unused sigil packaging code
- #4418: @josegonzalez Drop unused skip-restart flag for proxy:disable

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@v0.23.6/docs/assets/dokku.png);
+  background-image: url(https://cdn.jsdelivr.net/gh/dokku/dokku@v0.23.7/docs/assets/dokku.png);
   text-indent: 40px;
 }
 .blurb {
   color: #424242;
   background-color: #ededed;
-  background-image: url(https://cdn.jsdelivr.net/gh/dokku/dokku@v0.23.6/docs/assets/gplaypattern.png);
+  background-image: url(https://cdn.jsdelivr.net/gh/dokku/dokku@v0.23.7/docs/assets/gplaypattern.png);
   padding: 45px 0;
   text-align: center;
 }