feat(docker): Docker build with multi-stage

This will significantly reduce the size of the final image used for deployment.

Dockerfile

@@ -1,12 +1,17 @@
-FROM --platform=linux/amd64 node:19-bullseye-slim
-
+FROM node:22-alpine AS deps
 WORKDIR /app
-
 COPY . .
+RUN yarn install --frozen-lockfile
 
-RUN yarn install
+FROM deps AS builder
+WORKDIR /app
+COPY . .
 RUN yarn build
 
+FROM node:22-alpine AS runner
+WORKDIR /app
+COPY --from=builder --chown=nextjs:nodejs /app/public ./public
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
 EXPOSE 3000
-
-CMD ["yarn","start"]
+CMD ["node", "server.js"]

next.config.js

@@ -16,6 +16,7 @@ const nextConfig = {
     // https://nextjs.org/docs/api-reference/next.config.js/ignoring-typescript-errors
     ignoreBuildErrors: true,
   },
+  output: 'standalone',
 }
 
 module.exports = nextConfig