diff --git a/Dockerfile b/Dockerfile
index 88570c5..579db20 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -22,6 +22,14 @@ COPY . .
 # Build Next.js application
 ENV NODE_ENV production
 ENV NEXT_TELEMETRY_DISABLED 1
+
+# Define NEXT_PUBLIC variables explicitly for build time
+ENV NEXT_PUBLIC_API_URL=https://api.lions.dev/btpxpress
+ENV NEXT_PUBLIC_KEYCLOAK_URL=https://security.lions.dev
+ENV NEXT_PUBLIC_KEYCLOAK_REALM=btpxpress
+ENV NEXT_PUBLIC_KEYCLOAK_CLIENT_ID=btpxpress-frontend
+ENV NEXT_PUBLIC_APP_ENV=production
+
 RUN npm run build
 
 ## Stage 3: Production image