Output envs loaded by the dotenv instead of printing a source file content

src/manager.ts

@@ -62,16 +62,8 @@ export class Manager {
     const tmpFile = tmp.fileSync()
     const tmpFilePath = tmpFile.name
     await this.Exec(['ci-env', 'github', '--as-env-file', '-o', tmpFilePath])
-    dotenv.config({path: tmpFilePath})
-
-    fs.readFile(tmpFilePath, null, function(err, contents) {
-      if (err) {
-        console.error(err)
-      } else {
-        console.log(contents.toString())
-      }
-    })
-
+    const res = dotenv.config({path: tmpFilePath})
+    console.log(res.parsed)
     tmpFile.removeCallback()
   }