Consolidate MangaCircus app, scraper, and Compose baseline

runtime/config.js

@@ -0,0 +1,7 @@
+'use strict';
+const fs = require('fs');
+function secret(name) {
+  if (process.env[`${name}_FILE`]) return fs.readFileSync(process.env[`${name}_FILE`], 'utf8').trim();
+  return process.env[name] || '';
+}
+module.exports = { secret };