Docker Compose Clause Samples

Docker Compose. Docker Compose is a tool that allows you to define and operate Docker applications consisting of multiple Docker containers. It configures the application's services using YAML files and executes the construction and startup of all containers with a single command. The docker- compose CLI program allows users to conduct tasks on numerous containers at the same time, such as generating images, scaling containers, restarting stopped containers, and more. Image manipulation commands and user-interactive options are irrelevant in Docker Compose since they only address one container. The docker-compose.yml file is used to specify the services of an application and contains numerous configuration settings. The build option, for example, specifies configuration settings such as the Dockerfile location, while the command option allows one to change default Docker commands, among other things. A simple docker-compose file might look then one in Figure 17.