Added keycloak role

roles/docker-keycloak/README.md

@@ -1,12 +1,94 @@
 # docker-keycloak
 
-## More Information
+## Description 🌟
-- https://www.keycloak.org/
+
-- https://github.com/keycloak/keycloak
+This role automates the setup and configuration of Keycloak in a Docker environment. 
-- https://en.wikipedia.org/wiki/Keycloak
+Keycloak is an open-source identity and access management solution. 
-- https://www.keycloak.org/server/containers
+The role integrates Keycloak with PostgreSQL as a database and supports operation behind a reverse proxy like NGINX.
-- https://www.youtube.com/watch?v=fvxQ8bW0vO8
+
-- https://www.keycloak.org/server/reverseproxy
+## Features ✨
-- https://skycloak.io/blog/how-to-run-keycloak-behind-a-reverse-proxy/
+- Set up Keycloak as a Docker container.
-- https://github.com/keycloak/keycloak/issues/12913
+- Use PostgreSQL as the database.
-- https://www.keycloak.org/server/hostname
+- Customizable configuration of Keycloak environment variables.
+- Support for running behind a reverse proxy (e.g., NGINX).
+- Automatic creation and management of Docker Compose files.
+
+## Requirements 📋
+- Docker and Docker Compose must be installed on the target system.
+- A working NGINX proxy for forwarding requests to Keycloak (optional).
+
+## Variables ⚙️
+
+### Main Variables
+
+Defined in `vars/main.yml`:
+
+| Variable                        | Description                                                      |
+|---------------------------------|------------------------------------------------------------------|
+| `docker_compose_project_name`   | Name of the Docker Compose project. Default: `keycloak`.         |
+| `database_type`                 | Type of the database. Default: `postgres`.                      |
+| `database_password`             | Password for the PostgreSQL database user.                      |
+
+### Additional Variables (Templates)
+
+| Variable                        | Description                                                      |
+|---------------------------------|------------------------------------------------------------------|
+| `keycloak_version`              | Version of the Keycloak image.                                  |
+| `domain`                        | Domain where Keycloak will be accessible.                       |
+| `keycloak_administrator_username` | Admin username for Keycloak.                                   |
+| `keycloak_administrator_password` | Admin password for Keycloak.                                   |
+| `database_host`                 | Host of the PostgreSQL database.                                |
+| `database_name`                 | Name of the PostgreSQL database.                                |
+| `database_username`             | Username for the PostgreSQL database.                          |
+| `http_port`                     | Port where Keycloak will be accessible (default: `8080`).       |
+| `docker_restart_policy`         | Docker restart policy (e.g., `always`, `unless-stopped`).       |
+
+## Tasks 🛠️
+
+The role performs the following main tasks:
+
+1. **Include database and proxy configuration files:**
+   - Integration of a PostgreSQL database.
+   - Setup of a reverse proxy for the domain.
+
+2. **Generate `docker-compose.yml`:**
+   - Automatically generate the Docker Compose file based on templates and variables.
+
+3. **Start Docker containers:**
+   - The role launches the Keycloak project using Docker Compose.
+
+## Example: Usage 🚀
+
+Here is an example of how to use this role in a playbook:
+
+```yaml
+- name: Setup Keycloak with Docker
+  hosts: all
+  vars:
+    domain: "auth.example.com"
+    keycloak_version: "21.1.0"
+    keycloak_administrator_username: "admin"
+    keycloak_administrator_password: "securepassword"
+    database_host: "db.example.com"
+    database_name: "keycloak_db"
+    database_username: "keycloak_user"
+    database_password: "securedbpassword"
+    http_port: 8080
+    docker_restart_policy: "unless-stopped"
+  roles:
+    - docker-keycloak
+```
+
+## More Information 📚
+
+For more details about Keycloak, check out:
+- [Official Keycloak Documentation](https://www.keycloak.org/)
+- [GitHub Repository](https://github.com/keycloak/keycloak)
+- [Setting up Keycloak behind a Reverse Proxy](https://www.keycloak.org/server/reverseproxy)
+- [Wikipedia][https://en.wikipedia.org/wiki/Keycloak]
+- [Youtube Tutorial](https://www.youtube.com/watch?v=fvxQ8bW0vO8)
+---
+
+### Author ✍️
+**Kevin Veen-Birkenbach**  
+[veen.world](https://www.veen.world/)