I’m playing a lot with Docker lately. Building images, and then rebuilding, and then building again… It’s pretty boring. To automate this task a little I used inotify to build automatically after I changed any file. This trick could be used in many different situations.
On Linux
You will need inotify-tools package:
sudo apt-get install -y inotify-tools
Then run something like this:
while inotifywait -e modify -r .; do docker-compose build; done
On MacOS
You will need fswatch tool:
brew install fswatch
Then:
fswatch -o . | xargs -n1 -I{} docker-compose build
Both commands will rebuild my Docker images after any file change in current directory. Use Ctrl+c to exit from loop.