Ran into error with configLoader

I am using ember in a docker container and running into the following error after some saves

```
Build Canceled: Broccoli Builder ran into an error with `ConfigLoader` plugin. 💥
ENOENT: no such file or directory, scandir '/app/tmp/config_loader-input_base_path-TfM7QfFT.tmp/'
Error: ENOENT: no such file or directory, scandir '/app/tmp/config_loader-input_base_path-TfM7QfFT.tmp/'
at Error (native)
at Object.fs.readdirSync (fs.js:961:18)
at _walkSync (/app/node_modules/broccoli-caching-writer/node_modules/walk-sync/index.js:74:18)
at Function.entries (/app/node_modules/broccoli-caching-writer/node_modules/walk-sync/index.js:50:10)
at ConfigLoader.CachingWriter._conditionalBuild (/app/node_modules/broccoli-caching-writer/index.js:112:24)
at /app/node_modules/broccoli-plugin/read_compat.js:93:34
at tryCatch (/app/node_modules/rsvp/dist/rsvp.js:525:12)
at invokeCallback (/app/node_modules/rsvp/dist/rsvp.js:538:13)
at publish (/app/node_modules/rsvp/dist/rsvp.js:508:7)
at flush (/app/node_modules/rsvp/dist/rsvp.js:2415:5)
```

Maybe this is a docker issue but thought maybe you guys would have some ideas