Update documentation

Signed-off-by: Tom Chauveau <tom.chauveau@epitech.eu>

doc/install.md

@@ -1,5 +1,11 @@
 # Installing Dagger
 
+## Summary
+ - [Option 1 (Mac OS only): install from Homebrew](#option-1--mac-os-only---install-from-homebrew)
+ - [Option 2: install from a shell script](#option-2--install-from-a-shell-script)
+ - [Option 3: Manually fetch the latest binary release from Github](#option-3--manually-fetch-the-latest-binary-release-from-github)
+ - [Option 4: Compile from source](#option-4--compile-from-source)
+
 ## Option 1 (Mac OS only): install from Homebrew
 
 From your Mac OS terminal, run the following command:
@@ -8,12 +14,14 @@ From your Mac OS terminal, run the following command:
 brew install dagger/tap/dagger
 ```
 
+> :bulb: Verify the installation with `dagger version`.
+
 ## Option 2: install from a shell script
 
 From a terminal, run the following command:
 
 ```shell
-curl -sfL https://dagger-io.s3.amazonaws.com/dagger/install.sh | sh
+curl -sfL https://releases.dagger.io/dagger/install.sh | sh
 ```
 
 You now have the dagger binary in the local directory under `./bin/dagger`.
@@ -24,12 +32,16 @@ You can then install it globally on your system:
 sudo mv ./bin/dagger /usr/local/bin
 ```
 
+> :bulb: Verify the installation with `dagger version`.
+
 ## Option 3: Manually fetch the latest binary release from Github
 
 Open your web browser to [the latest release](https://github.com/dagger/dagger/releases/latest).
 
 From the **assets** section, download the archive corresponding to your OS and Arch.
 
+> :bulb: Verify the installation with `dagger version`.
+
 ## Option 4: Compile from source
 
 You will need [Go](https://golang.org) version 1.16 or later.
@@ -51,3 +63,5 @@ cd dagger; make
 ```shell
 cp ./cmd/dagger/dagger /usr/local/bin
 ```
+
+> :bulb: Verify the installation with `dagger version`.