Configured Docker evironment for frontend

frontend/frontend.dockerfile

@@ -0,0 +1,15 @@
+# Etap 1: Build
+FROM node:20 AS builder
+WORKDIR /app
+COPY package*.json ./
+RUN npm install
+COPY . .
+RUN npm run build
+
+# Etap 2: Nginx
+FROM nginx:alpine
+COPY --from=builder /app/dist /usr/share/nginx/html
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]