Initial demo setup for Komodo + Gitea integration

Added:
- Simple Express.js app with health endpoint
- Dockerfile for containerization
- Docker Compose configuration
- Komodo resource definitions (.komodo/resources.toml)
- Comprehensive README with integration details

This repo demonstrates Build, Stack, and Sync resources.

Dockerfile

@@ -0,0 +1,12 @@
+FROM node:20-alpine
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm install --production
+
+COPY . .
+
+EXPOSE 3000
+
+CMD ["npm", "start"]