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Minimal Ubuntu, on Docker Hub

Ubuntu announced its new minimal Ubuntu image optimized for automated use at scale, with a tiny package set and minimal security cross-section. Speed, performance and stability are primary concerns for cloud developers and ops.
The 29MB Docker image for Minimal Ubuntu 18.04 LTS serves as a highly efficient container starting point, and allows developers to deploy multicloud containerized applications faster.

Minimal Ubuntu is designed for completely automated operations, with none of the usual human-friendly utilities for comfortable interactive usage. Editors, documentation, locales and other user-oriented features of Ubuntu Server have been removed. What remains are only the vital components of the boot sequence.  Images still contain ssh, apt and snapd so you can connect and install any package you’re missing.

Launching a Docker  instance with docker run ubuntu:18.04  therefore launches a Docker instance with the latest Minimal Ubuntu.
You can read the announcement of Ubuntu here.
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