docker-compose.mdx

title	sidebarTitle	description	icon
Using Subtrace with Docker Compose	Docker Compose	Monitor requests in your Docker Compose app.	docker

If you're using Docker Compose to run your app, you can use Subtrace to monitor all of your backend requests. Here's how you can get started:

Make the following change to your `Dockerfile` to install and use Subtrace in your app's Docker image:

- CMD ["node", "./app.js"]
+ RUN curl -fsSLO https://subtrace.dev/download/latest/$(uname -s)/$(uname -m)/subtrace && chmod +x ./subtrace
+ CMD ["./subtrace", "run", "--", "node", "./app.js"]

Add the following lines to your service's definition in your `compose.yaml` file:

cap_add:
  - SYS_PTRACE

Start your app as you normally would:

That's it! Open the `subt.link` URL in your browser to see your app's requests show up in real time:

It's possible that the `subt.link` URL is printed from within a container. Be sure to check