Update Readme.md

Readme.md

@@ -1,36 +1,47 @@
-# README for Docker Image Build and Publish Workflows
+# 🧱 i3 Base Image for GNS3 (VNC)
 
-## Overview
+> **Base for**: [vnc-template](https://git.merith.xyz/gns3/vnc-template)  
+Minimal Alpine-based Docker image with i3 window manager for GNS3 VNC appliances.
 
-This repository contains two GitHub Actions workflows that automate the building and publishing of Docker images to an OCI registry. 
+---
 
-### Workflows
+## 🛠 Core Features
 
-1. **On Commit to Main**
-   - **Trigger:** Activates on commits to the `main` branch (tags are excluded).
-   - **Purpose:** Builds and publishes a Docker image for each commit.
+- **<50MB** Alpine base with i3 window manager
+- Automatic DHCP configuration (`udhcpc`)
+- Extensible design for lab environments
 
-2. **On Tag Push**
-   - **Trigger:** Activates when a new tag is pushed.
-   - **Purpose:** Builds and publishes a Docker image for the tag and tags it as `latest`.
+---
 
-## Prerequisites
+## 🏷️ Image Tags
 
-- **Secrets Needed:**
-  - `OCI_TOKEN`: Your OCI registry token.
-  - `OCI_USER`: Your OCI registry username.
+| Tag        | Description                       |
+|------------|-----------------------------------|
+| `latest`   | Stable release (`vX.X.X`)         |
+| `nightly`  | Latest `main` branch commit      |
+| `<commit>` | Immutable build (e.g. `427726ea`) |
 
-## How to Use
+---
 
-1. **Clone the Repository:** Get a local copy of this repository.
-2. **Modify Dockerfile:** Update the `Dockerfile` for your application.
-3. **Push Changes:** Push changes to the `main` branch or create a new tag.
-4. **Check Workflow Status:** View the Actions tab in Forgjo to monitor workflow runs.
+## ▶️ Usage with vnc-template
 
-## Notes
+1. Reference this image in your `Dockerfile`:
+```Dockerfile
+FROM git.merith.xyz/gns3/vnc-template
+```
 
-- Ensure your Docker environment is compatible with multi-platform builds if necessary.
+2. Add custom tools and configs in [vnc-template](https://git.merith.xyz/gns3/vnc-template):
+```Dockerfile
+RUN apk add firefox wireshark
+COPY my-configs /etc/
+```
 
-## License
+3. Auto start programs by adding your own entrypoint
+```Dockerfile
+COPY custom-entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+```
+> **⚠️ Do _not_ add an `ENTRYPOINT` line in your `Dockerfile`.**  
+> The base image already defines the required entrypoint for proper operation in GNS3.
 
-This project is licensed under the MIT License. See the [LICENSE](LICENSE) file for details.
+See [vnc-template repository](https://git.merith.xyz/gns3/vnc-template) for full appliance creation guide.