# Docker

> system tray for KDE3 and GNOME2

**Wikidata**: [Q113469872](https://www.wikidata.org/wiki/Q113469872)  
**Source**: https://4ort.xyz/entity/docker

## Summary
Docker is a free software application designed to function as a system tray for the KDE3 and GNOME2 desktop environments. It operates as an X11 application and dockapp, providing taskbar functionality. The software is distinct from the modern containerization platform that shares the same name.

## Key Facts
- **Function**: System tray for KDE3 and GNOME2 desktop environments.
- **Instance of**: Free software, X11 application, dockapp.
- **License**: GNU General Public License, version 2.0 or later.
- **Inception**: 2002.
- **Latest Stable Version**: 1.5.1 (released August 5, 2017).
- **Creator**: Dana Jansens (also known as Ben Jansens).
- **Operating System**: BSD and Linux distributions.
- **Aliases**: WMDocker, docker.
- **Official Website**: https://icculus.org/openbox/2/docker/

## FAQs
### Q: What is the Docker application used for?
A: Docker is used as a system tray application specifically for the KDE3 and GNOME2 desktop environments. It runs as a dockapp under X11.

### Q: Who created the Docker system tray application?
A: The software was created by Dana Jansens, who is also credited as Ben Jansens.

### Q: Is this Docker the same as the container software?
A: No, this Docker is a desktop system tray tool first released in 2002. It is different from the Docker containerization platform (Wikidata ID Q15206305).

## Why It Matters
Docker (the system tray application) serves a specific utility for users of legacy or lightweight desktop environments like KDE3 and GNOME2. As free software under the GPL, it provides users the freedom to modify and distribute the code. Its inclusion in major package repositories like Debian, Ubuntu, Fedora, and BSD ports ensures accessibility for a wide range of Unix-like system users. Its continued updates, such as the 2017 release, demonstrate sustained utility for specific user groups despite the emergence of more prominent software sharing the same name.

## Notable For
- **Specific Utility**: Designed exclusively as a system tray for KDE3 and GNOME2.
- **Broad Distribution**: Available in standard repositories for Debian, Ubuntu, Fedora, Gentoo, FreeBSD, OpenBSD, and NetBSD.
- **Name Collision**: Shares the name "Docker" with the extremely popular containerization platform, often requiring the use of aliases like `wmdocker` for clarity.
- **Longevity**: Maintained from 2002 through at least 2017.

## Body
### History and Versions
Docker was initially released in 2002. The development timeline includes several stable versions:
- **Version 1.0**: Released October 16, 2002.
- **Version 1.3**: Released October 18, 2002.
- **Version 1.5**: Released in 2003.
- **Version 1.5.1**: Released August 5, 2017.

### Technical Details
Docker is categorized as an X11 application and a dockapp. Its primary use is as a taskbar (system tray). The software is copyrighted by Dana Jansens. It runs on BSD operating systems and is available in the Arch User Repository (AUR) under the package name `wmdocker`.

### Availability and Source Code
The source code is hosted on GitHub at `https://github.com/mdomlop/wmdocker`. It is available for installation via various package managers:
- **FreeBSD Port**: `x11/docker-tray`
- **OpenBSD Port**: `x11/wmdocker`
- **NetBSD Package**: `x11/docker`
- **Debian/Ubuntu Packages**: `docker`, `wmdocker`
- **Gentoo Package**: `x11-plugins/docker`
- **Fedora Package**: `wmdocker`

## References

1. Free Software Directory
2. [Docker. 2002](https://icculus.org/pipermail/openbox/2002-October/000096.html)
3. [Docker 1.3. 2002](https://icculus.org/pipermail/openbox/2002-October/000102.html)
4. [Source](https://icculus.org/openbox/2/docker/)
5. [Release 1.5.1. 2017](https://github.com/mdomlop/wmdocker/releases/tag/1.5.1)
6. [Source](https://github.com/mdomlop/wmdocker/blob/master/AUTHORS)
7. [Source](https://sarata.com/manpages/openbox.1.html)
8. [Source](http://git.openbox.org/?p=dana/openbox-history.git;a=blob;f=AUTHORS)