add to .gitignore

Author: reteps

.gitignore

@@ -12,6 +12,8 @@ yarn-error.log
 # Next build files
 .next
 public/build
+# Blog RSS feed
+public/blog/rss.xml
 out
 
 # macOS files

src/lib/rss.ts

@@ -3,7 +3,9 @@ import path from "path";
 import RSS from "rss";
 import { BlogPostWithSlug } from "./blog";
 
-const SITE_URL = "https://www.prairielearn.com";
+const SITE_URL = process.env.VERCEL_PROJECT_PRODUCTION_URL 
+  ? `https://${process.env.VERCEL_PROJECT_PRODUCTION_URL}`
+  : "https://www.prairielearn.com";
 const BLOG_URL = `${SITE_URL}/about/blog`;
 
 export async function generateRssFeed(