Tightly coupled applications to the underlying operating system are difficult to maintain, and containerization helps significantly to ease this problem by making the applications platform$-$neutral and by making the management of releases and package dependencies a configuration task that can be expressed explicitly in a YAML file.

Navigate to Explore Docker's Container Image RepositoryLinks to an external site. to create a docker$-$compose file and use docker$-$compose $($An overview of Docker ComposeLinks to an external site.$)$ to pull and run your favorite image $($Postgres$,$ NGiNX, etc.$)$ on your personal development computer. Comment on the ports, tags, images, etc. of the container image you pulled and ran from docker hub.