Gatsby: Develop does not re-compile inside docker?

[theshire-io]

Summary

When running gatsby develop -H 0.0.0.0 inside a Docker container and then modify source files, it does not trigger a recompile.

For apps that use webpack's dev server (like CRA), the trick is to modify devServer.watchOptions to set poll: true - then triggering a recompile inside Docker when files change works fine. But if I understand correctly, Gatsby does not use webpacks dev server.

What is the way to set the watch mode to polling in Gatsby?

Relevant information

Host OS: Windows 10 Pro / Hyper-V
Docker Desktop 2.0.0.0-win81

Environment (if relevant)

Docker image used: node:10

  System:
    OS: Linux 4.9 Debian GNU/Linux 9 (stretch) 9 (stretch)
    CPU: (2) x64 Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz
    Shell: 4.4.12 - /bin/bash
  Binaries:
    Node: 10.15.0 - /usr/local/bin/node
    Yarn: 1.12.3 - /usr/local/bin/yarn
    npm: 6.4.1 - /usr/local/bin/npm
  Languages:
    Python: 2.7.13 - /usr/bin/python
  npmPackages:
    gatsby: ^2.0.76 => 2.0.85
    gatsby-image: ^2.0.20 => 2.0.25
    gatsby-plugin-manifest: ^2.0.9 => 2.0.13
    gatsby-plugin-offline: ^2.0.16 => 2.0.20
    gatsby-plugin-react-helmet: ^3.0.2 => 3.0.5
    gatsby-plugin-sharp: ^2.0.14 => 2.0.17
    gatsby-source-filesystem: ^2.0.8 => 2.0.12
    gatsby-source-strapi: ^0.0.6 => 0.0.6
    gatsby-transformer-sharp: ^2.1.8 => 2.1.10

[sidharthachatterjee]

Hey @theshire-io

gatsby uses chokidar under the hood and you should be able to enable polling by setting the CHOKIDAR_USEPOLLING=1 env var as documented in https://github.com/paulmillr/chokidar

[theshire-io]

Thank you @sidharthachatterjee !

[artystable]

I think I spent close to 8 (intermittent) hours the other day trying to solve this. I ended up going on a Webpack config wild goose chase.

THIS, good sir, is exactly what I was looking for.

Holy $h!+ THANK YOU @sidharthachatterjee for answering the question! And THANK YOU @theshire-io for asking it!

[idtg-xx]

I second that. Thank you sir @sidharthachatterjee. Works a treat.