ci: add docker support

Dockerfile

@@ -0,0 +1,32 @@
+# Multi-stage build for production
+FROM node:18-alpine AS build-stage
+
+# Set working directory
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci
+
+# Copy source code
+COPY . .
+
+# Build the app
+RUN npm run build
+
+# Production stage
+FROM nginx:stable-alpine AS production-stage
+
+# Copy built assets from build stage
+COPY --from=build-stage /app/dist /usr/share/nginx/html
+
+# Copy custom nginx config
+COPY nginx.conf /etc/nginx/nginx.conf
+
+# Expose port 80
+EXPOSE 80
+
+# Start nginx
+CMD ["nginx", "-g", "daemon off;"]