added README.md

README.md

@@ -0,0 +1,30 @@
+```
+# Ubuntu/Debian
+sudo apt update && sudo apt install ansible -y
+
+# macOS (with Homebrew)
+brew install ansible
+
+# Fedora/RHEL/CentOS
+sudo dnf install ansible-core
+```
+
+```
+ansible-galaxy collection install containers.podman
+```
+```
+ssh-keygen -t ed25519 -C "matrix-deploy"
+# Press Enter to save default: ~/.ssh/id_ed25519
+```
+```
+ssh-copy-id deploy@matrix.example.com
+# Replace with your actual server IP/hostname & user
+```
+## Deployment ##
+```
+# Just re-run (idempotent):
+ansible-playbook playbook.yml --ask-vault-pass
+
+# Or re-run only nginx role (if you changed site/Nginx)
+ansible-playbook playbook.yml --tags nginx-proxy --ask-vault-pass
+```