Nodemon is not working in Docker environment

Question

I'm using Docker with fig to build NodeJS dev-env.

While I using nodemon to watch the server.js, changing server.js won't restart the server.

CMD ["nodemon", "/nodeapp/server.js"]

But while I changed from nodemon to supervisor, then it worked!

CMD ["supervisor", "/nodeapp/server.js"]

Does anyone know where the problem is?

More informations are below:

---

My fig folder structure:

app/server.js
    package.json
    node_modules/
fig.yml
Dockerfile

fig.yml:

nodejs:
  build: .
  ports:
    - "8080:8080"

Dockerfile:

RUN apt-get update --fix-missing
RUN rm /bin/sh && ln -s /bin/bash /bin/sh

# NVM
RUN curl -sL https://deb.nodesource.com/setup | sudo bash - && \
  apt-get install -y nodejs

VOLUME ./app:/nodeapp
WORKDIR /nodeapp

RUN rm /bin/sh && ln -s /bin/bash /bin/sh && \
  npm install -g nodemon mocha supervisor
CMD ["nodemon", "/nodeapp/server.js"]

Server.js: (sample code from NodeJS website)

var http = require('http');

http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello 12\n');
}).listen(8080);

console.log('Server running at http://127.0.0.1:8080/');

Answer 1

There is a special option to enable nodemon's legacy watching mode:

nodemon --legacy-watch