Merge pull request #10 from t-lo/t-lo/elaborate-on-group-purpose-and-add-gh-discussions-reference

Elaborate on group purpose, move group engagement section up

Author: brauner

content/_index.md

@@ -7,10 +7,35 @@ BookToC: false
 
 # The Linux Userspace API (UAPI) Group
 
-The userspace API ("uapi") group is a community for people with an interest in innovating how we build, deploy, and run modern Linux operating systems.
+The userspace API ("uapi") group is a community for people with an interest in innovating how we build, deploy, run, and securely update modern Linux operating systems.
 It serves as a central gathering place for specs, documentation, and ideas.
 
-Follow [@uapi-group](https://twitter.com/uapi_group) on twitter to catch the latest news!
+The group is in the process of constituting itself and is exploring the problem space.
+In the general scope of the group are trusted boot mechanisms, kernel / disk image formats, TPM usage, safe and secure updates, and related topics.
+The group also cares about interop of image-based and/or immutable Linux distributions.
+The group is in its inception, so the list of topics is by no means complete.
+Other relevant topics related to the above might be added in the future.
+
+The UAPI group aims to establish specifications for common concepts shared among relevant parties.
+We are open to anyone who has an interest in constructive collaboration to join the discussions, and to represent the directions and interests of their projects and distributions.
+
+Contributing members include people from Ubuntu Core, Debian, GNOME OS, Fedora CoreOS, Endless OS, Arch Linux, SUSE, Flatcar, 
+systemd, image-builder/osbuild, mkosi, tpm2-software, System Transparency, buildstream, BTRFS, rpm-ostree,
+Microsoft, Amazon, and Meta.
+
+## Engage with the Group
+
+Our main means of engagement is Github.
+Please check out the group's [Github discussions](https://github.com/orgs/uapi-group/discussions) for general ongoing conversations.
+Don't hesitate to tune in and share your thoughts!
+Feel free to start a new discussion if none exists for whatever brings you here.
+Please keep the group's focus in mind and do not stray off-topic.
+
+Check out the group's repos at the [uapi group github org](https://github.com/uapi-group) to get an overview of existing work.
+To engage with specific content please file issues and / or PRs directly to the [specifications](https://github.com/uapi-group/specifications/),
+[docs](https://github.com/uapi-group/docs/), and [kernel feature ideas](https://github.com/uapi-group/kernel-features/) repositories, respectively.
+
+To stay up to date on the group's activities there's also a Twitter account you can follow: [uapi-group](https://twitter.com/uapi_group).
 
 ## UAPI Group Specifications
 
@@ -28,8 +53,3 @@ Please find generic documents like meeting / summit minutes at https://uapi-grou
 ## Kernel Feature Ideas
 
 A collection of ideas for [kernel features](https://uapi-group.org/kernel-features) to improve low-level user space.
-
-## Participate
-
-Check out the [UAPI group github org](https://github.com/uapi-group) to engage and to collaborate with the group.
-We also have a [forum for discussions (via Github Discussions)](https://github.com/orgs/uapi-group/discussions).