debian-forge-composer/README.md
David Rheinsberg 1c32a30092 docs: rework README and align with osbuild
This aligns the layout of `README.md` with the osbuild project. It now
has a clear structure with individual sections that we can continue to
improve on.

This tries to salvage most of the information that was previously in
README.md, but removes the bits and pieces that were either moved into
the osbuild-composer(7) man-page, or feels misplaced in a project
readme.
2020-04-01 00:22:59 +02:00

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Markdown

OSBuild Composer
================
Operating System Image Composition Services
The composer project is a set of HTTP services for composing operating system
images. It builds on the pipeline execution engine of *osbuild* and defines
its own class of images that it supports building.
Multiple APIs are available to access a composer service. This includes
support for the [lorax-composer](https://github.com/weldr/lorax) API, and as
such can serve as drop-in replacement for lorax-composer.
You can control a composer instance either directly via the provided APIs, or
through higher-level user-interfaces from external projects. This, for
instance, includes a
[Cockpit Module](https://github.com/weldr/cockpit-composer) or using the
[composer-cli](https://weldr.io/lorax/composer-cli.html) command-line tool.
### Project
* **Website**: <https://www.osbuild.org>
* **Bug Tracker**: <https://github.com/osbuild/osbuild-composer/issues>
### About
Composer is a middleman between the workhorses from *osbuild* and the
user-interfaces like *cockpit-composer*, *composer-cli*, or others. It defines
a set of high-level image compositions that it supports building. Builds of
these compositions can be requested via the different APIs of *Composer*, which
will then translate the requests into pipeline-descriptions for *osbuild*. The
pipeline output is then either provided back to the user, or uploaded to a user
specified target.
The following image visualizes the overall architecture of the OSBuild
infrastructure and the place that *Composer* takes:
![overview](docs/osbuild-composer.svg)
Consult the `osbuild-composer(7)` man-page for an introduction into composer,
information on running your own composer instance, as well as details on the
provided infrastructure and services.
### Requirements
The requirements for this project are:
* `osbuild >= 7`
* `systemd >= 244`
At build-time, the following software is required:
* `go >= 1.14`
* `python-docutils >= 0.13`
### Build
The standard go package system is used. Consult upstream documentation for
detailed help. In most situations the following commands are sufficient to
build and install from source:
```sh
mkdir build
go build -o build ./...
```
The man-pages require `python-docutils` and can be built via:
```sh
make man
```
### Repository:
- **web**: <https://github.com/osbuild/osbuild-composer>
- **https**: `https://github.com/osbuild/osbuild-composer.git`
- **ssh**: `git@github.com:osbuild/osbuild-composer.git`
### License:
- **Apache-2.0**
- See LICENSE file for details.