Update 01-install-docker.md

Signed-off-by: Thomas Pichler <[email protected]>

Author: PichlerThomas

web4-env-setup/day1/01-install-docker.md

@@ -1,20 +1,55 @@
-# Step 1: Install Docker Desktop
+# Step 01 – Install & Configure Docker Desktop (Windows)
 
-## 🎯 Goal
-Install Docker Desktop to enable containerized development with Web4.x.
+This step walks through downloading, installing, and initializing Docker Desktop on a Windows machine, including WSL integration. The goal is to get Docker ready for use in a development environment that can later be replicated or adapted cross-platform.
 
-## 🧰 Prerequisites
-- Windows 10/11 with WSL2 support
-- Admin privileges
+---
 
-## 📦 Download & Install
-1. Visit the official Docker Desktop site: [https://www.docker.com/products/docker-desktop](https://www.docker.com/products/docker-desktop)
-2. Download and run the installer.
-3. Enable the WSL 2 backend when prompted.
-4. Restart your system if necessary.
+## 🧭 Overview
 
-## ✅ Verification
-Run the following in your terminal:
+| Step | Action |  
+|------|--------|  
+| [1.1](#11-download-docker-desktop) | Download Docker Desktop for Windows (Intel/AMD) |  
+| [1.2](#12-run-the-installer--reboot) | Run the installer and reboot when prompted |  
+| [1.3](#13-first-launch--docker-login) | Launch Docker Desktop and log in |  
+| [1.4](#14-update-the-windows-subsystem-for-linux-wsl) | Update the Windows Subsystem for Linux (WSL) via PowerShell |  
+| [1.5](#15-restart-docker-desktop) | Restart Docker to finalize the WSL integration |
 
-```bash
-docker --version
+---
+
+## 🧩 Detailed Steps
+
+### 1.1 Download Docker Desktop
+
+- Go to: [https://www.docker.com/products/docker-desktop/](https://www.docker.com/products/docker-desktop/)
+- Choose the version labeled: **Windows (Intel/AMD)**
+- Click to download the `.exe` installer
+
+> 💡 Note: The “Intel/AMD” version refers to the standard x86-64 architecture. This is the correct version for most Windows laptops and desktops, regardless of whether the CPU is from Intel or AMD. Do **not** choose the ARM version unless you're running Windows on ARM.
+
+---
+
+### 1.2 Run the Installer & Reboot
+
+- Launch the downloaded installer
+- Follow the prompts and agree to any optional configuration Docker may suggest
+- When prompted, **reboot your system**
+
+---
+
+### 1.3 First Launch & Docker Login
+
+- After reboot, Docker Desktop will start automatically
+- Sign in using your Docker Hub credentials  
+  > If you don’t have an account, you can create one at [https://hub.docker.com/signup](https://hub.docker.com/signup)
+
+---
+
+### 1.4 Update the Windows Subsystem for Linux (WSL)
+
+Docker Desktop will notify you that WSL needs to be updated. To do so:
+
+1. Open **PowerShell** as administrator
+2. Run the following command:
+
+   ```powershell
+   wsl --update