Docker has established itself as a pivotal platform for managing containerized applications, with over 10 million public images available on the Docker Hub. This tool functions both as a command-line interface and a desktop application, making it versatile for various user preferences. Its popularity in both homelabs and production environments has made Docker a standard in the industry.
While Docker is widely recognized, it is not the sole option for container management. Alternatives such as Podman, Containerd + Nerdctl, and Rancher Desktop also comply with the Open Container Initiative (OCI), which Docker helped to establish. These alternatives offer different implementations of container technology.
Containers, which can be thought of as specialized applications, typically perform one or two specific tasks. Users can create custom images, although using single-purpose containers is generally recommended for simplicity. This design allows for easier management of preferences and data, as each container maintains persistent storage in a Docker volume or a designated folder on the user's computer.