How to use Docker Compose Watch for automatic code synchronization during local development?
Docker Compose Watch is a built-in tool designed to accelerate the local development cycle by automatically tracking source code changes and instantly transferring them inside a running container. The tedious necessity of constantly rebuilding the image upon every single line of code change is a thing of the past, as the tool is capable of operating in real time.
To configure this functionality, you need to edit the docker-compose.yml configuration file by adding a special watch section for each service you want to develop in interactive mode. In this section, you specify the paths to local files to monitor, as well as the behavior strategy upon detecting changes.
There are several main synchronization strategies that can be customized to the needs of a specific technology stack:
To start monitoring in the terminal, it is enough to run the standard docker compose watch command. The tool will connect to the daemon and start outputting synchronization logs, allowing you to write code in your favorite editor and see the results of changes in the browser or console almost instantly, combining the convenience of local development with container environment isolation.