change LIMIT_CPU to LIMIT_CPUS to control the number of cpus used

Author: pettinarip

.env.example

@@ -24,6 +24,6 @@ IS_PREVIEW_DEPLOY=false
 # Note: always include `en` as it is the default lang of the site
 BUILD_LOCALES=
 
-# If resource constraints are being hit during builds, change LIMIT_CPU to `true`
-# to limit the demand during build time
-LIMIT_CPU=false
+# If resource constraints are being hit during builds, change LIMIT_CPUS to a
+# fixed number of CPUs (e.g. 2) to limit the demand during build time
+LIMIT_CPUS=

next.config.js

@@ -2,18 +2,19 @@ const { PHASE_DEVELOPMENT_SERVER } = require("next/constants")
 
 const { i18n } = require("./next-i18next.config")
 
-const experimental =
-  (process.env.LIMIT_CPU || "").toLowerCase() === "true"
-    ? {
-        // This option could be enabled in the future when flagged as stable, to speed up builds
-        // (see https://nextjs.org/docs/pages/building-your-application/configuring/mdx#using-the-rust-based-mdx-compiler-experimental)
-        // mdxRs: true,
-
-        // Reduce the number of cpus and disable parallel threads in prod envs to consume less memory
-        workerThreads: false,
-        cpus: 2,
-      }
-    : {}
+const LIMIT_CPUS = Number(process.env.LIMIT_CPUS || 2)
+
+const experimental = LIMIT_CPUS
+  ? {
+      // This option could be enabled in the future when flagged as stable, to speed up builds
+      // (see https://nextjs.org/docs/pages/building-your-application/configuring/mdx#using-the-rust-based-mdx-compiler-experimental)
+      // mdxRs: true,
+
+      // Reduce the number of cpus and disable parallel threads in prod envs to consume less memory
+      workerThreads: false,
+      cpus: LIMIT_CPUS,
+    }
+  : {}
 
 /** @type {import('next').NextConfig} */
 module.exports = (phase, { defaultConfig }) => {