Add Docker, Woodpecker CI/CD, and cleanup

- Add Dockerfile and .dockerignore for containerisation
- Add .woodpecker.yml pipeline (build + deploy to yugioh network on .101)
- Add .gitignore to stop tracking .env; replace with .env.example
- Add npm start script
- Fix index.js: move versionRoutes require before listen, add /health endpoint
- Fix git remote push URLs (were pointing at Dashboard repo)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/index.js

@@ -1,28 +1,26 @@
-//index.js
 const express = require('express');
 require('dotenv').config();
 const cors = require('cors');
 
-// Routes
 const importRoutes = require('./routes/importRoutes');
 const collectionRoutes = require('./routes/collectionRoutes');
 const exportCardsRoutes = require('./routes/exportCardsRoutes');
-const cardImageRoutes = require('./routes/cardImageRoutes'); // <-- new
+const cardImageRoutes = require('./routes/cardImageRoutes');
+const versionRoutes = require('./routes/versionRoutes');
 
 const app = express();
-app.use(cors()); // enable CORS for frontend
+app.use(cors());
 app.use(express.json());
 
-// Mount routes
+app.get('/health', (_req, res) => res.json({ status: 'ok' }));
+
 app.use('/import', importRoutes);
 app.use('/collection', collectionRoutes);
 app.use('/exportCards', exportCardsRoutes);
 app.use('/cardImage', cardImageRoutes);
+app.use('/db-version', versionRoutes);
 
 const PORT = process.env.PORT || 3000;
 app.listen(PORT, () => {
-  console.log(`Server running on http://localhost:${PORT}`);
+  console.log(`Server running on port ${PORT}`);
 });
-
-const versionRoutes = require('./routes/versionRoutes');
-app.use('/db-version', versionRoutes);