docs(#4): Update readme

README.md

@@ -9,7 +9,7 @@
 **Open Network Diagram** is an **open-source, self-hosted tool** for creating **interactive network and infrastructure diagrams** using a **declarative JSON format**.
 
 ✅ **Fully self-hostable via Docker**  
-✅ **JSON-based network structure** (editable in UI or manually)
+✅ **Docker-first deployment target** (Netlify optional for demo hosting)
 ✅ **Interactive network visualisation**  
 ✅ **Simple file-based configuration**  
 ✅ **Lightweight Svelte**
@@ -20,25 +20,41 @@ Use it to **document your home lab, office network, or cloud infrastructure** wi
 
 ## **🚀 Quick Start (For Users)**
 
-### **1️⃣ Run Open Network Diagram via Docker**
+### **1️⃣ Create Your Runtime Data File**
 
-Pull and run the latest image:
+Copy the template and edit your own network data:
 
 ```bash
-docker run -d -p 8080:3000 jcreek23/open-network-diagram
+cp data/network.json.example data/network.json
 ```
 
-- **`-p 8080:3000`** → Maps the app to `http://localhost:8080`
+### **2️⃣ Run Open Network Diagram via Docker**
 
-### **2️⃣ Open the Web UI**
+From this repo:
+
+```bash
+docker compose up --build
+```
+
+Or pull and run directly:
+
+```bash
+docker run -d -p 8080:80 -v "$(pwd)/data:/usr/share/nginx/html/data:ro" jcreek23/open-network-diagram
+```
+
+- **`-p 8080:80`** → Maps the app to `http://localhost:8080`
+- **`-v .../data:/usr/share/nginx/html/data:ro`** → Uses your local `data/network.json`
+
+### **3️⃣ Open the Web UI**
 
 Visit **`http://localhost:8080`** to view your network diagram.
 
-### **3️⃣ Modify Your Network (JSON-Based)**
+### **4️⃣ Modify Your Network (JSON-Based)**
 
-- The app reads **`/data/network.json`** from static assets.
-- In this repo, the default file is **`static/data/network.json`**.
-- Update that file to change the diagram data.
+- Docker runtime reads **`/data/network.json`** from the mounted volume.
+- In this repo, your editable file is **`data/network.json`** (gitignored).
+- Netlify demo builds use committed sample data at **`static/data/network.json`**.
+- After editing JSON, click **Reload Default JSON** in the UI.
 
 ---
 
@@ -65,17 +81,28 @@ pnpm run dev
 
 - Runs at `http://localhost:5173`
 
+### **4️⃣ Build Targets**
+
+```bash
+pnpm run build          # default (Docker/static target)
+pnpm run build:docker   # explicit Docker/static target
+pnpm run build:netlify  # explicit Netlify target
+```
+
 ---
 
 ## **🛠️ Project Structure**
 
-```
+```text
 open-network-diagram/
-│   ├── src/              # Svelte components
-│   ├── package.json      # Dependencies
-│── Dockerfile            # Docker setup
-│── .github/workflows/    # CI/CD pipelines
-│── README.md             # Documentation
+├── src/                    # Svelte app source
+├── static/data/network.json # Demo dataset (Netlify/demo)
+├── data/network.json.example # User data template (Docker)
+├── Dockerfile              # Docker build/runtime
+├── docker-compose.yml      # Local Docker run with mounted data
+├── netlify.toml            # Netlify build config
+├── .github/workflows/      # CI workflows (Docker image build/push)
+└── README.md               # Documentation
 ```
 
 ---
@@ -91,13 +118,14 @@ docker build -t open-network-diagram .
 ### **Run Locally**
 
 ```bash
-docker run -p 8080:3000 open-network-diagram
+docker run --rm -p 8080:80 -v "$(pwd)/data:/usr/share/nginx/html/data:ro" open-network-diagram
 ```
 
-### **CI/CD (GitHub Actions)**
+### **CI/CD (GitHub Actions + Netlify)**
 
-- Automatic Docker builds when changes are pushed to `main`.
-- Pushes the latest image to **Docker Hub**.
+- GitHub Actions workflow (`.github/workflows/docker.yml`) builds Docker on PRs.
+- Pushes to `main` publish Docker images to **Docker Hub** (`jcreek23/open-network-diagram`).
+- Netlify uses its own CI/CD pipeline with `netlify.toml` (`pnpm run build:netlify`).
 
 ---
 
@@ -114,10 +142,7 @@ Define your network using **`network.json`**:
 			"role": "Hypervisor",
 			"operatingSystem": "Proxmox",
 			"software": {
-				"vms": [
-					{ "name": "OpnSense", "role": "Router", "ipAddress": "10.0.0.4" },
-					{ "name": "PiVPN", "role": "VPN Server", "ipAddress": "10.0.0.5" }
-				]
+				"vms": [{ "name": "OpnSense", "role": "Router", "ipAddress": "10.0.0.4" }]
 			},
 			"hardware": {
 				"cpu": "Intel N100",
@@ -125,7 +150,8 @@ Define your network using **`network.json`**:
 				"networkPorts": 4
 			}
 		}
-	]
+	],
+	"devices": [{ "name": "Switch", "ipAddress": "10.0.0.2", "type": "Nintendo Switch" }]
 }
 ```
 
@@ -163,11 +189,3 @@ We welcome contributions! To contribute:
 
 **Author:** [Joshua Creek](https://github.com/jcreek)  
 **Project Repo:** [GitHub](https://github.com/jcreek/OpenNetworkDiagram)
-
----
-
-### **🔥 Next Steps**
-
-✅ **Set up GitHub Repo**  
-✅ **Push initial project structure**  
-✅ **Add CI/CD for automated Docker builds**