fswatch error when trying to run react in a windows docker container

I'm running a unbuntu:latest docker container using Docker Toolbox on win10. I use create-react-app npm to automatically create a react app for me. when I run "npm start" I get the following error.

events.js:182
      throw er; // Unhandled 'error' event
      ^

Error: watch /frontend/public EMFILE
    at _errnoException (util.js:1026:11)
    at FSWatcher.start (fs.js:1383:19)
    at Object.fs.watch (fs.js:1409:11)
    at createFsWatchInstance (/frontend/node_modules/chokidar/lib/nodefs-handler.js:37:15)
    at setFsWatchListener (/frontend/node_modules/chokidar/lib/nodefs-handler.js:80:15)
    at FSWatcher.NodeFsHandler._watchWithNodeFs (/frontend/node_modules/chokidar/lib/nodefs-handler.js:228:14)
    at FSWatcher.NodeFsHandler._handleDir (/frontend/node_modules/chokidar/lib/nodefs-handler.js:407:19)
    at FSWatcher.<anonymous> (/frontend/node_modules/chokidar/lib/nodefs-handler.js:455:19)
    at FSWatcher.<anonymous> (/frontend/node_modules/chokidar/lib/nodefs-handler.js:460:16)
    at FSReqWrap.oncomplete (fs.js:154:5)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! frontend@0.1.0 start: `react-scripts start`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the frontend@0.1.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2017-09-19T00_53_33_776Z-debug.log

Pretty simple stuff - here's my dockerFile

FROM ubuntu:latest

ENV DEBIAN_FRONTEND noninteractive

RUN apt-get update
RUN apt-get install -y apt-utils
RUN apt-get install -y curl
#RUN curl -sL https://deb.nodesource.com/setup_6.x | bash -
RUN curl -sL https://deb.nodesource.com/setup_8.x | bash -
RUN apt-get install -y nodejs

# install editor
RUN apt-get install -y vim

# install tools and create frontend
RUN npm install -g create-react-app
RUN create-react-app frontend

# configure proxy (let's frontend talk to backend)
RUN sed '$i,\n"proxy": "http://localhost:3001"' frontend/package.json >> frontend/package.json.new
RUN cp frontend/package.json.new frontend/package.json

WORKDIR /frontend

# run the frontend
CMD npm start

I can build the same dockerfile on my mac and it works fine. FSWatch is some library that checks if files change - so not sure what's going on here exactly. I'm kind of stumped. Any help would be greatly appreciated.

Docker Toolbox does not support file system event notifications. (confirmed by Docker dev Mano Marks). Need to use "Docker for Windows" for it to work.

Guess MSFT is making some $$ off me.