feat: add Dockerfile for containerized deployment of the Next.js application

Dockerfile

@@ -0,0 +1,21 @@
+FROM node:22-alpine
+RUN apk add --no-cache libc6-compat openssl
+WORKDIR /app
+ENV PATH /app/node_modules/.bin:$PATH
+
+# On copie tout, on installe tout, on build tout au même endroit
+COPY . .
+RUN npm ci
+RUN npx prisma generate
+RUN npm run build
+
+EXPOSE 3000
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+RUN chown -R nextjs:nodejs /app
+
+USER nextjs
+
+# On lance directement via npm
+CMD ["npm", "start"]