Add Dockerfile and gitignore

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Dependency directories
+node_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Build outputs
+dist
+build
+
+# dotenv environment variables file
+.env
+.env.test
+.env.local
+
+# IDE files
+.idea/
+.vscode/
+*.iml
+*.iws
+*.ipr
+*.swp
+*.swo
+
+# macOS
+.DS_Store
+
+# Windows
+Thumbs.db
+ehthumbs.db
+ehthumbs_vista.db
+*.stackdump
+[Dd]esktop.ini
+
+# Testing
+coverage/
+.nyc_output/

Dockerfile

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+FROM node:18-alpine
+
+WORKDIR /app
+
+# Install dependencies for sharp
+RUN apk add --no-cache \
+    g++ \
+    make \
+    python3
+
+# Copy package files and install dependencies
+COPY package*.json ./
+RUN npm install
+
+# Copy source code
+COPY . .
+
+# Build TypeScript code
+RUN npm run build
+
+# Default environment variables
+ENV NODE_ENV=production
+
+# The API key should be passed at runtime
+# ENV OPENROUTER_API_KEY=your-api-key-here
+# ENV OPENROUTER_DEFAULT_MODEL=your-default-model
+
+# Run the server
+CMD ["node", "dist/index.js"]