Dockerfiles, while being the de factor standard for generating Dockercontainers, are also often seen as cumbersome to write and maintain due to thenature of Docker layering, subtle behaviour changes due to caches, and bestpractices who requires explicit actions to be applied. To improve thissituation while keeping the innovation of Docker, the Ansible community camewith the ansible-container project, a tool that permit to reuse the existingtrove of Ansible roles to create, build and deploy containers in productionwith a single command. This talk will present the project, explain the basics of ansible-container,show how to use it to build and deploy a complex multi-containers application.