Difference between revisions of "Docker Apps"

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#REDIRECT [[App Center Developer Guide]]
= Apps and Univention App Center =
Univention App Center provides a platform for software vendors and an easy-to-use entry point for Univention
Corporate Server (UCS) users to extend their IT environment with business software. The App Center is part
of the web-based UCS management system and gives an overview of available and installed Apps. Its purpose
is to present available business applications for UCS and simplify their installation. This allows their easy
evaluation and fosters the purchase decision.
Apps are the content of the App Center and they consist of the business software and some meta data about
the presentation in the App Center. Most of them come with an integration into UCS, e.g. the management
system or the mailstack. The purpose of an App is to provide the business solution in a way that it is ready to
use after the installation and that comes with a decent default configuration to offer a satisfying impression
of the solution. The installation is non-interactive and is done by just a click. Furthermore, an App utilizes
the benefits of UCS and the business solution.
The App Center infrastructure consists of two parts: The already mentioned frontend is part of the web-
based UCS management system (Univention Management Console, UMC) which installs, upgrades, removes
Apps. There is also a command line tool, univention-app, but normally, users use the UMC module.
The backend stores the App meta data, the App container images, and the App software packages in their
own respective repositories on a remote server operated by Univention. The technological basis of all Apps is
Docker, an operating-system-level virtualization software, and (where needed) APT, the well known advanced
package tool from Debian.
Therefore, the App needs to provide a dedicated Docker image or so-called Debian packages. The App Center
frontend handles the installation process and will download and start the Docker image and/or install packages
using APT.
Ideally, integration into UCS can be achieved using the standard Docker image or Debian packages the software solution already provides elsewhere plus one more dedicated package or just a few unpackaged scripts.
The next sections explain how to prepare your business solution as an App for UCS. It also outlines the
integration possibilities and describes what to do by example. [[App_Center/Dev/Prepare|Let's go]]!
[[Category:App Center Dev Doc]]

Latest revision as of 14:18, 27 August 2018

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