Nodemon doesn't restart when it's running inside a Docker container and files are changed from the host machine. Basically a typical dev setup where you're editing files from your host machine, but the app is running inside a Docker container.

Running:

• Docker version 19.03.13, build 4484c46d9d
• docker-compose version 1.27.4, build 40524192

1. Start the container

npm install
docker-compose up -d
docker logs -f nodemon-watch-issue-app

2. Change a file from your host machine. nodemon doesn't restart the app.

If you switch to using legacy watch, it works. Edit docker-compose.yml and change command: "npm run start" to command: "npm run start:legacy". Restart the container, change a file. You should see nodemon restart the app.