docs: copy cname after build

Author: smeijer

CNAME

@@ -0,0 +1 @@
+leaflet-geosearch.meijer.works

gatsby-node.js

@@ -1,5 +1,23 @@
 /* eslint-disable @typescript-eslint/no-var-requires */
 const path = require('path');
+const fs = require('fs');
+
+const statics = ['CNAME'];
+
+exports.onPostBuild = ({ reporter }) => {
+  for (const file of statics) {
+    const src = path.resolve(process.cwd(), file);
+    const dest = path.resolve(process.cwd(), '.docz/dist', file);
+
+    if (!fs.existsSync(src)) {
+      reporter.info(`File ${file} not found`);
+      continue;
+    }
+
+    fs.copyFileSync(src, dest);
+    reporter.info(`Copied ${src} → ${dest}`);
+  }
+};
 
 exports.onCreateWebpackConfig = ({ actions, stage, loaders }) => {
   if (stage === 'build-html' || stage === 'develop-html') {