Make README.md AlmaLinux ELevate specific

README.md

@@ -1,16 +1,52 @@
-**Before doing anything, please read the [leapp-repository documentation](https://leapp-repository.readthedocs.io/).**
+**Before doing anything, please read the [leapp-repository documentation](https://leapp-repository.readthedocs.io/) and [ELevate wiki](https://wiki.almalinux.org/elevate/)**
 
 Also, you could find the [Leapp framework documentation](https://leapp.readthedocs.io/) useful to read.
 
 ---
 
+## Supported Distributions
+
+This fork extends leapp in-place upgrade support beyond RHEL to the following distributions:
+
+- **AlmaLinux** (8 → 9, 9 → 10)
+- **AlmaLinux Kitten** (as a CentOS Stream equivalent)
+- **CentOS Stream** (8 → 9, 9 → 10)
+
+Cross-distribution upgrades (e.g. CentOS 7 → AlmaLinux 8) are also supported through the [ELevate](https://almalinux.org/elevate/) project.
+
+## 3rd Party Repository Support (ELevate Vendors)
+
+In addition to the base distribution repositories, this fork includes vendor integration for popular 3rd party repositories. Vendor data files are stored under `/etc/leapp/files/vendors.d/` and can provide:
+
+- **Repository mappings** (`<vendor>_map.json`) — maps source repositories to their target equivalents
+- **PES event files** (`<vendor>_pes.json`) — package migration events (install, remove, replace, reinstall) for vendor packages
+- **GPG signatures** (`<vendor>.sigs`) — GPG key fingerprints for vendor-signed packages
+- **GPG public keys** (`rpm-gpg/`) — trusted GPG keys imported during the upgrade
+
+### Supported 3rd Party Repositories
+
+The following vendors are supported via [ELevate](https://almalinux.org/elevate/):
+
+- EPEL
+- Docker CE
+- MariaDB
+- Nginx
+- PostgreSQL
+- Imunify
+- KernelCare
+- TuxCare
+- ELevate
+
+---
+
 ## Troubleshooting
 
 ### Where can I report an issue or RFE related to the framework or other actors?
 
 - GitHub issues are preferred:
   - Leapp framework: [https://github.com/oamg/leapp/issues/new/choose](https://github.com/oamg/leapp/issues/new/choose)
-  - Leapp actors: [https://github.com/oamg/leapp-repository/issues/new/choose](https://github.com/oamg/leapp-repository/issues/new/choose)
+  - Leapp actors: [https://github.com/almalinux/leapp-repository/issues/new/choose](https://github.com/almalinux/leapp-repository/issues/new/choose)
+  - Leapp data: [https://github.com/almalinux/leapp-data/issues/new/choose](https://github.com/almalinux/leapp-data/issues/new/choose)
 
 - When filing an issue, include:
   - Steps to reproduce the issue
@@ -24,9 +60,3 @@ Also, you could find the [Leapp framework documentation](https://leapp.readthedo
 `# tar -czf leapp-logs.tgz /var/log/leapp /var/lib/leapp/leapp.db`
 
 Then you may attach only the `leapp-logs.tgz` file.
-
-### Where can I seek help?
-We’ll gladly answer your questions and lead you to through any troubles with the
-actor development.
-
-You can reach us in the [discussions sections of our GitHub repository](https://github.com/oamg/leapp-repository/discussions).