Working Dockerfile

dashboard/Dockerfile

@@ -1,17 +1,46 @@
-FROM node:21 as build
+# Derived from
+# https://github.com/vercel/next.js/blob/4b9ef1eb23f9d247321c9368d08c2398b6ec8169/examples/with-docker/Dockerfile
+FROM node:21-alpine AS base
 
+FROM base AS deps
 WORKDIR /app
 
-ENV NODE_ENV production
-
 COPY package*.json /app/
 RUN npm ci --legacy-peer-deps
 
-COPY . ./
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
 RUN npm run build
 
-FROM nginx
+FROM base AS runner
+WORKDIR /app
+
+ENV NODE_ENV production
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+COPY --from=builder /app/public ./public
+
+# Set the correct permission for prerender cache
+RUN mkdir .next
+RUN chown nextjs:nodejs .next
+
+# Automatically leverage output traces to reduce image size
+# https://nextjs.org/docs/advanced-features/output-file-tracing
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+
+USER nextjs
+
+EXPOSE 3001
 
-WORKDIR /usr/share/nginx/html
+ENV PORT=3001
 
-COPY --from=build /app/out/ ./
+# server.js is created by next build from the standalone output
+# https://nextjs.org/docs/pages/api-reference/next-config-js/output
+ENV HOSTNAME="0.0.0.0"
+CMD ["node", "server.js"]

dashboard/next.config.js

@@ -22,4 +22,5 @@ module.exports = {
       },
     ];
   },
+  output: 'standalone'
 };