Add Dockerfiles and docker-compose for local deployment

frontend/Dockerfile

@@ -0,0 +1,25 @@
+# Build stage
+FROM node:18-alpine as build
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm install
+
+COPY . .
+
+# We inject the API URL for production build so nginx serves the correct config
+ARG REACT_APP_API_URL
+ENV REACT_APP_API_URL=$REACT_APP_API_URL
+
+RUN npm run build
+
+# Serve stage
+FROM nginx:alpine
+
+COPY --from=build /app/build /usr/share/nginx/html
+
+# Expose port 80 for Nginx
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]