Add initial implementation of ePage application with Docker support

- Create main application logic with HTTP handlers for form submissions
- Implement Pushover API integration for sending messages
- Add unit tests for handlers and Pushover payload structure
- Include Dockerfile and docker-compose configuration for easy deployment
- Add example environment file and update README with setup instructions
- Create HTML templates for user interface

README.md

@@ -1,2 +1,88 @@
-# epage-go
+# ePage (Go)
 
+## Description
+
+Send me an ePage via Pushover. This is a Go recreation of the original Python Flask application.
+
+A simple web application that accepts form submissions and sends them via the Pushover API.
+
+## Features
+
+- Simple web form for name, email, and message
+- Integration with Pushover API for push notifications
+- Clean Bootstrap UI
+- Easy to deploy with Docker
+
+## Requirements
+
+- Go 1.23 or higher
+- Pushover API token and user key
+
+## Environment Variables
+
+Set the following environment variables:
+
+- `PUSHOVER_API_TOKEN`: Your Pushover API token
+- `PUSHOVER_USER_KEY`: Your Pushover user key
+- `PORT`: Port to run the server on (default: 5000)
+- `CSRF_KEY`: CSRF key for production (optional, generated automatically for development)
+
+## Running Locally
+
+1. Install dependencies:
+```bash
+go mod download
+go mod tidy
+```
+
+2. Create a `.env` file (copy from `.env.example`):
+```bash
+cp .env.example .env
+```
+
+3. Edit `.env` with your actual Pushover credentials:
+```
+PUSHOVER_API_TOKEN=your_actual_token
+PUSHOVER_USER_KEY=your_actual_key
+PORT=5000
+```
+
+4. Run the application:
+```bash
+go run ./src
+```
+
+The application will automatically load the `.env` file and listen on the configured port (default: 5000).
+The server will be available at `http://localhost:5000`
+
+## Building
+
+```bash
+go build -o epage
+./epage
+```
+
+## Docker
+
+Build the Docker image:
+```bash
+docker build -t epage .
+```
+
+Run the container:
+```bash
+docker run -e PUSHOVER_API_TOKEN=your_token -e PUSHOVER_USER_KEY=your_key -p 5000:5000 epage
+```
+
+## API Integration
+
+The application sends form data to the Pushover API with the following message format:
+
+```
+Name: <name>
+Email: <email>
+
+Message: <message>
+```
+
+With priority 1 (High) and sound "cosmic".