Only start repl if standard input is a terminal

src/site/server.js

@@ -41,5 +41,8 @@ subdirs("pug", async (err, dirs) => {
 	Object.assign(passthrough, pinski.getExports())
 
 	console.log("Server started")
-	require("./repl")
+
+	if (process.stdin.isTTY || process.argv.includes("--enable-repl")) {
+		require("./repl")
+	}
 })