We are rolling out Docker v20 to Pipelines in June 2021

This post announces the progressive rollout of Docker v20 to Bitbucket Pipelines throughout June 2021. It highlights that builds using the `docker service` in `bitbucket-pipeline.yml` may require updates to interact with the Docker daemon. It recommends updating local Docker to v20 and testing builds locally, providing an example of updating `testcontainers-java` to version 1.15.1 or newer. It also links to Docker Engine v20.x.x release notes and API v1.41 version history.