Add MAINTAINERS.md and ADOPTERS.md

These files help clarify/formalize some information.
In particular I'd like to look at tools that auto-sync from MAINTAINERS
to the github permissions so that we can maintain that in a git-ops
fashion.

Signed-off-by: Colin Walters <walters@verbum.org>

ADOPTERS.md

@@ -0,0 +1,37 @@
+
+> **Note**
+> Do you want to add yourself to this list? Simply fork the repository and open a PR with the required change.
+> We have a short description of the adopter types at the bottom of this page. Each type is in alphabetical order. 
+
+# bootc Adopters (direct)
+
+| Type | Name | Since | Website | Use-Case |
+|:-|:-|:-|:-|:-|
+Vendor | Red Hat | 2024 | https://redhat.com | Image Based Linux 
+End-User | HeliumOS | 2024 | https://www.heliumos.org/ | An atomic desktop operating system for your devices
+
+# bootc Adopters (indirect, via ostree)
+
+Bootc is a relatively new project, but much of the underlying technology and goals is *not* new.
+The underlying ostree project is over 13 years old (as of 2024). This project also relates
+to [rpm-ostree](https://github.com/coreos/rpm-ostree/) which has existed a really long time.
+
+Not every one of these projects uses bootc directly today, but a toplevel goal of bootc
+is to be the successor to ostree, and it is our aim to seamlessly carry forward these users.
+
+| Type | Name | Since | Website | Use-Case |
+|:-|:-|:-|:-|:-|
+| Vendor | Endless | 2014 | [link](https://www.endlessos.org/os) | A Completely Free, User-Friendly Operating System Packed with Educational Tools, Games, and More
+| Vendor | Red Hat | 2015 | [link](https://redhat.com) | Image Based Linux
+| Vendor | Apertis | 2020 | [link](https://apertis.org) | Collaborative OS platform for products
+| Vendor | Fedora Project | 2021 | [link](https://fedoraproject.org/atomic-desktops/) | An atomic desktop operating system aimed at good support for container-focused workflows
+| Vendor | UBlue | 2023 | [link](https://universal-blue.org/) | The reliability of a Chromebook, but with the flexibility and power of a traditional Linux desktop
+
+### Adopter Types
+
+**End-user**: The organization runs bootc in production in some way.
+
+**Integration**: The organization has a product that integrates with bootc, but does not contain bootc.
+
+**Vendor**: The organization packages bootc in their product and sells it as part of their product.
+

MAINTAINERS.md

@@ -0,0 +1,9 @@
+# Maintainers
+
+The current Maintainers Group for the bootc Project consists of:
+
+| Name | GitHub ID | Employer | Responsibilities |
+| ---- | ---- | ---- | ---- |
+| Chris Kyrouac | [ckyrouac](https://github.com/orgs/containers/people/ckyrouac) | Red Hat | Approver |
+| Colin Walters | [cgwalters](https://github.com/orgs/containers/people/cgwalters) | Red Hat | Approver |
+| John Eckersberg | [jeckersb](https://github.com/orgs/containers/people/jeckersb) | Red Hat | Approver |

README.md

@@ -24,11 +24,13 @@ can be upgraded in place seamlessly across any future changes.
 
 ## Documentation
 
-See the [project documentation](https://containers.github.io/bootc/); there
-are also operating systems and distributions using bootc; here are some examples:
+See the [project documentation](https://containers.github.io/bootc/).
 
-- https://docs.fedoraproject.org/en-US/bootc/
-- https://www.heliumos.org/
+## Adopters (base and end-user images)
+
+The bootc CLI is just a client system; it is not tied to any particular
+operating system or Linux distribution. You very likely want to actually
+start by looking at [ADOPTERS.md](ADOPTERS.md).
 
 ## Community discussion
 
@@ -41,4 +43,5 @@ Matrix channel and a weekly video call meeting for example: <https://docs.fedora
 ## Developing bootc
 
 Are you interested in working on bootc? Great! See our [CONTRIBUTING.md](CONTRIBUTING.md) guide.
+There is also a list of [MAINTAINERS.md](MAINTAINERS.md).