diff --git a/next/Dockerfile b/next/Dockerfile
index a52c473..81bb03f 100644
--- a/next/Dockerfile
+++ b/next/Dockerfile
@@ -13,7 +13,7 @@ FROM node:lts-alpine
 
 WORKDIR /app
 
-ENV NODE_ENV production
+ENV NODE_ENV=production
 
 RUN addgroup --system --gid 1001 nodejs && \
     adduser --system --uid 1001 nextjs
@@ -33,8 +33,8 @@ USER nextjs
 
 EXPOSE 3000
 
-ENV PORT 3000
-ENV HOSTNAME "0.0.0.0"
+ENV PORT=3000
+ENV HOSTNAME="0.0.0.0"
 
 # server.js is created by next build from the standalone output
 # https://nextjs.org/docs/pages/api-reference/next-config-js/output