Huge role refactoring/cleanup. Other commits will propably follow. Because some bugs will exist. Still important for longrun and also for auto docs/help/slideshow generation

roles/web-app-mybb/Installation.md

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+# Installation
+
+## Multi Domain Installation
+If you want to access your mybb over multiple domains, keep the following in mind:
+- Set Cookie Domain to nothing
+- Access mybb for installation via mybb.<primary_domain> 
+- Set the Board Url to mybb.<primary_domain>
+
+## Manual Installation of MyBB Plugins
+
+This guide describes the process of manually installing MyBB plugins in your Docker-MyBB environment. This can be useful if you want to quickly test plugins or do not wish to execute the Ansible role.
+
+### Steps for Manual Installation
+
+
+1. **Prepare Plugin Files:**
+   - Download the desired MyBB plugin zip files.
+
+2. **Copy plugin to host:**
+    - ```bash scp <plugin> administrator@<server>:/opt/docker/mybb/plugins```
+
+3. **Unzip Plugin Files on the Host:**
+   - Unzip the plugin zip files in the host's plugin directory:
+     ```bash
+     unzip /opt/docker/mybb/plugins/<plugin-file>.zip -d /opt/docker/mybb/plugins/
+     ```
+   - Replace `<plugin-file>.zip` with the name of the plugin zip file.
+   - Repeat this step for each plugin.
+
+4. **Access the Docker Container:**
+   - Open a terminal or SSH session on the server where the Docker container is running.
+
+5. **Copy Unzipped Plugin Files to the Container:**
+   - Copy the unzipped plugin files from the host directory to the Docker container:
+     ```bash
+     docker compose cp /opt/docker/mybb/plugins/<unzipped-plugin-folder> application:/var/www/html/inc/plugins/
+     ```
+   - Replace `<unzipped-plugin-folder>` with the name of the unzipped plugin folder.
+
+6. **Restart the Container:**
+   - Execute the following command to restart the MyBB container:
+     ```bash
+     docker-compose -p mybb up -d --force-recreate
+     ```
+   - This ensures all changes take effect.
+
+7. **Activate Plugins in the MyBB Admin Panel:**
+   - Open the MyBB admin panel in your web browser.
+   - Navigate to the plugin settings and activate the newly installed plugins.
+
+### Important Notes
+
+- Ensure you use the correct paths and filenames.
+- Do not forget to regularly back up your MyBB database and files before making changes.
+- If encountering issues, refer to the MyBB documentation or specific instructions from the plugin author.