Integrate Docker and gather metrices using Datadog Agent

Install Datadog agent (for example in Ubuntu). Then enable process monitoring using the steps mentioned in below link.
https://www.devopsschool.com/blog/how-to-enable-live-process-monitoring-in-datadog-agent/

Install Docker server. For example, follow this link for installing in Ubuntu
https://www.devopsschool.com/blog/how-to-install-docker-in-linux/

Enable Docker integration with Datadog by modifying conf.yaml file located inside /etc/datadog-agent/conf.d/docker.d/. Need to create this file first by making a copy from conf.yaml.default.

Restart the Datadog agent.

Create a few containers as well.

Finally verify whether docker & container metrices are appearing and containers are reporting in Datadog.