feat: Add Dockerfile and docker-compose.yml for project containerization

Frontend-Learner/Dockerfile

@@ -1,5 +1,5 @@
 # --- Build Stage ---
-FROM node:20-alpine AS build-stage
+FROM node:20-bullseye-slim AS build-stage
 
 # กำหนดโฟลเดอร์ทำงานใน Container
 WORKDIR /app
@@ -17,7 +17,7 @@ COPY . .
 RUN npm run build
 
 # --- Production Stage ---
-FROM node:20-alpine AS production-stage
+FROM node:20-bullseye-slim AS production-stage
 
 # กำหนดโฟลเดอร์ทำงาน
 WORKDIR /app