It seems the issue is that is using docker-compose v1. You will need to enable the option of cli-version from the docker compose plugin and set it to 2: GitHub - buildkite-plugins/docker-compose-buildkite-plugin: 🐳⚡️ Run build scripts, and build + push images, w/ Docker Compose
We’ll update the default behavior in the plugin by the end of the year so it will use v2 by default.