Homebrew: Automatically install shell completions for bash/zsh/fish (#…

…352)

* Goreleaser/Homebrew: Install shell completions

* Use "stratus completion" instead of "stratus completions"

* Use "stratus" instead of "stratus-red-team" for basename for autocompletions

* Add docs on new autocompletion autoinstall

---------

Co-authored-by: Christophe Tafani-Dereeper <christophe.tafanidereeper@datadoghq.com>

.goreleaser.yaml

@@ -22,6 +22,11 @@ brews:
   url_template: "https://github.com/DataDog/stratus-red-team/releases/download/{{ .Tag }}/{{ .ArtifactName }}"
   license: Apache-2.0
   homepage: "https://stratus-red-team.cloud"
+  install: |
+    bin.install "stratus"
+
+    # Install shell completions
+    generate_completions_from_executable(bin/"stratus", "completion", shells: [:bash, :fish, :zsh], base_name: "stratus")
 archives:
   - replacements:
       darwin: Darwin

docs/user-guide/commands/autocompletion.md

@@ -6,8 +6,20 @@ title: CLI autocompletion
 
 Stratus Red Team uses [cobra](https://github.com/spf13/cobra)'s built-in support to add autocompletions when working with the CLI.
 
+## Sample usage
+
+```bash
+stratus deton[tab]
+stratus detonate aws[tab][tab]
+```
 ## Setup
 
+### Through Homebrew
+
+When installing Stratus Red Team through Homebrew, shell completions are automatically installed for bash, zsh and fish shells.
+
+### Manually
+
 === "bash"
 
     Ensure you have [bash-completion](https://github.com/scop/bash-completion) installed (`brew install bash-completion`  / `apt install bash-completion`), then run:
@@ -47,9 +59,4 @@ Stratus Red Team uses [cobra](https://github.com/spf13/cobra)'s built-in support
     stratus completion fish > ~/.config/fish/completions/stratus.fish
     ```
 
-## Sample usage
 
-```bash
-stratus deton[tab]
-stratus detonate aws[tab][tab]
-```