diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 5bb107c..7af6485 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -4,6 +4,11 @@ on:
   push:
     branches:
       - main
+      - release/*
+  pull_request:
+    branches:
+      - main
+      - release/*
 
 jobs:
   infrastructure:
diff --git a/docs/INTRODUCTION.md b/docs/INTRODUCTION.md
index 1e6ff29..5ee3600 100644
--- a/docs/INTRODUCTION.md
+++ b/docs/INTRODUCTION.md
@@ -2,6 +2,8 @@
 
 You need a VPC in AWS and a VPN client to connect to the VPC. This document describes how to create a VPC and VPN client configuration in AWS.
 
+![Deployment Diagram](images/client-vpn-scenario-igw.png)
+
 ## Create VPC (Optional)
 
 An existing VPC could be used to create the VPN client. If you don't have a VPC, you can create one using the following command:
diff --git a/docs/images/client-vpn-scenario-igw.png b/docs/images/client-vpn-scenario-igw.png
new file mode 100644
index 0000000..f4367ed
Binary files /dev/null and b/docs/images/client-vpn-scenario-igw.png differ