Updated installation instructions

www/docs/installation.md

@@ -1,9 +1,28 @@
 # Installation
 
-### Download the Binary
-Go to the [releases](https://github.com/F1bonacc1/process-compose/releases/latest), download the package for your OS, and copy the binary to somewhere on your PATH.
+## Download the Binary
 
-### Nix
+### Binary
+Go to the [releases](https://github.com/F1bonacc1/process-compose/releases/latest), download the package for your OS, and add to your `$PATH`.
+
+### Install Script
+Install script which is very useful in scenarios like CI. Many thanks to GoDownloader for enabling the easy generation of this script.
+
+By default, it installs on the `./bin` directory relative to the working directory:
+
+```shell
+sh -c "$(curl --location https://raw.githubusercontent.com/F1bonacc1/process-compose/main/scripts/get-pc.sh)" -- -d
+```
+
+It is possible to override the installation directory with the `-b` parameter. On Linux, common choices are `~/.local/bin` and `~/bin` to install for the current user or `/usr/local/bin` to install for all users:
+
+```shell
+sh -c "$(curl --location https://raw.githubusercontent.com/F1bonacc1/process-compose/main/scripts/get-pc.sh)" -- -d -b ~/.local/bin
+```
+!!! warning "Caution"
+    On macOS and Windows, `~/.local/bin` and `~/bin` are not added to `$PATH` by default.
+
+## Nix
 If you have the Nix package manager installed with Flake support, just run:
 
 ```sh
@@ -16,8 +35,8 @@ nix run github:F1bonacc1/process-compose -- --help
 
 To use process-compose declaratively configured in your project `flake.nix`, checkout [process-compose-flake](https://github.com/Platonic-Systems/process-compose-flake).
 
-### Brew (MacOS and Linux)
+## Brew (MacOS and Linux)
 
 ```shell
 brew install f1bonacc1/tap/process-compose
-```
+```