Add Docker deployment configuration and CI/CD pipeline

Dockerfile

@@ -0,0 +1,33 @@
+# Build stage
+FROM node:18-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci --only=production
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN npm run build
+
+# Production stage
+FROM node:18-alpine AS production
+
+WORKDIR /app
+
+# Copy built application from builder stage
+COPY --from=builder /app/.output ./
+
+# Create music directory for volume mounting
+RUN mkdir -p /app/public/music
+
+# Expose port
+EXPOSE 3000
+
+# Start the application
+CMD ["node", "server/index.mjs"]