make the app buildable for prod

crawler/frontend/Dockerfile

@@ -0,0 +1,29 @@
+# Stage 1: Build the React app
+FROM node:24-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files first for better caching
+COPY package.json package-lock.json* ./
+
+# Install dependencies (prefers yarn if available)
+RUN npm ci 
+
+# Copy all files and build
+COPY . .
+
+RUN npm run build # TODO: MOVE ME BELOW
+
+FROM nginx:alpine
+
+# Remove default nginx static files
+RUN rm -rf /usr/share/nginx/html/*
+
+WORKDIR /app
+
+# Copy only necessary files from the builder stage
+COPY --from=builder /app/dist /usr/share/nginx/html  
+COPY --from=builder /app/nginx.conf /etc/nginx/conf.d/default.conf  
+
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]