Merge pull request #1860 from spotify/rugvip/config

config,config-loader: add support for suffixed config files and multiple roots

packages/backend-common/src/config.ts

@@ -23,7 +23,8 @@ import { loadConfig } from '@backstage/config-loader';
 export async function loadBackendConfig() {
   const paths = findPaths(__dirname);
   const configs = await loadConfig({
-    rootPath: paths.targetRoot,
+    env: process.env.NODE_ENV,
+    rootPaths: [paths.targetRoot, paths.targetDir],
     shouldReadSecrets: true,
   });
   return configs;