Hot reload not working on the latest version in docker container

[icaroNZ]

Describe the bug
The hot reload is not working on Docker using the image denoland/deno:1.10.3

To Reproduce Steps to reproduce the behavior:
1 - Download a simple project here: https://github.com/icaroNZ/denon-reload-problem
2 - run docker-compose up
3 - modify the main.ts file

Expected behavior
Expected that the application will reload once the main.ts file is changed

Configuration or Project
The project was suppose to use a denon.json file for configuration:

{
  "scripts": {
    "start": {
      "cmd": "deno run --allow-net --allow-env src/main.ts"
    }
  },
  "watcher": {
    "exts": ["js", "jsx", "ts", "tsx", "json"],
    "match": ["**/*.*"],
    "skip": ["Dockerfile"]
  },
  "logger": {
    "fullscreen": false,
    "quiet": false,
    "debug": true
  }
}

For simplicity the docker compose file just run denon run --allow-env --allow-net src/main.ts instead

Is expected both solutions to work.

Setup

• OS: macOS/windows
• Deno version: 1.10.3
• Denon version: 2.4.7

[algoflows]

I have exactly the same issue, tried so many different settings and nothing seems to work it has to be an issue with denon restarts on file changes working correctly within the container.

[algoflows]

Denon still actively maintained?

[fractalf]

I found out why this is an issue. It appears like events are not triggered when files change in a mounted volume in a docker container. This seems to be a problem also for nodemon.

Refs:

• https://stackoverflow.com/questions/56247919/file-system-events-not-triggered-in-docker-container-when-files-in-mounted-volum
• https://github.com/remy/nodemon#application-isnt-restarting

So the fix/workaround here is to enable polling by setting "legacy": true in the config file under the property "watcher". After I did this it now "hot reloads".