docs(Nextcloud/mariadb-redis-ffmpeg-example/README.md): Added README file

Nextcloud/mariadb-redis-ffmpeg-example/README.md

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+# Nextcloud Docker Setup
+
+## Description
+This project provides a Docker-based setup for Nextcloud with enhanced features including face recognition and memories. It's designed for easy deployment in home lab environments, particularly within LXC containers.
+
+## Features
+- Docker-based Nextcloud instance
+- MariaDB for database
+- Redis for caching
+- FFmpeg and other tools for advanced features
+- Supervisor for process management
+- Compatibility with LXC containers
+
+## Prerequisites
+- Docker and Docker Compose installed on your system
+- Basic understanding of Docker and command-line operations
+- LXC container (if deploying in a containerized environment)
+
+## Installation and Setup
+
+1. Install Docker
+   If you haven't already, install Docker on your system. You can find instructions for your operating system [here](https://docs.docker.com/get-docker/).
+
+2. Create a user with specific UID and GID
+   Run the following command to create a new user with UID and GID set to 10000:
+   
+   ```bash
+   sudo useradd -u 10000 -g 10000 -m nextclouduser
+   ```
+
+3. Add the user to the Docker group
+   This allows the user to run Docker commands without sudo:
+
+   ```bash
+   sudo usermod -aG docker nextclouduser
+   ```
+
+4. Map UID and GID of the LXC container
+   If you're using an LXC container, ensure that the UID and GID of the container match those of the host user. This typically involves editing the LXC container's configuration file to add:
+
+   ```bash
+    # Map users
+    lxc.idmap: u 0 100000 65536
+    lxc.idmap: g 0 100000 65536
+   ```
+
+    Adjust these values according to your specific host UID/GID mappings.
+
+5. (Optional) Change app data storage
+    If you prefer to use a Docker volume instead of a local directory for app data, you can modify the `docker-compose.yml` file accordingly.
+
+6. Build the Nextcloud app image
+    Run the following command in the directory containing your Dockerfile and docker-compose.yml:
+
+    ```bash
+    docker compose build app
+    ```
+
+7. Start the Nextcloud stack
+   Launch the entire Nextcloud stack with:
+
+   ```bash
+    docker compose up -d
+    ```
+
+## Configuration
+- Copy the `.env.example` file to `.env` and adjust the variables as needed.
+- Modify the `docker-compose.yml` file if you need to change ports or volume mappings.
+
+## Usage
+After the installation, you can access Nextcloud by navigating to `http://localhost:8080` in your web browser. Use the admin credentials specified in your `.env` file for the initial login.
+
+## Advanced Features
+This setup includes support for Nextcloud's face recognition and memories apps. These can be enabled through the Nextcloud web interface after installation.
+
+## Troubleshooting
+If you encounter issues, check the Docker logs:
+```bash
+ docker compose logs
+```