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-# Cloudflare Dynamic DNS
+# Dynamic DNS Updates with Cloudflare
 
-This Docker container provides a simple and efficient solution for dynamic DNS
-updates using Cloudflare DNS. It allows you to automatically update your DNS
-records in Cloudflare at specified intervals, ensuring that your services are
-always accessible through a domain name.
+This Docker container offers a straightforward and efficient solution for
+automating dynamic DNS updates using the Cloudflare DNS service. It empowers you
+to effortlessly update your DNS records in Cloudflare at predefined intervals,
+guaranteeing that your services are consistently accessible through a domain
+name.
+
+## Prerequisites
+
+Before you can use this Docker container, ensure you meet the following
+prerequisites:
+
+- Docker: [Docker installation guide](https://docs.docker.com/get-docker/)
+- Cloudflare DNS:
+  [Cloudflare zone setups guide](https://developers.cloudflare.com/dns/zone-setups/)
+
+## Installation
+
+This script runs as a Docker container, which means installation is as simple as
+pulling the pre-built Docker container and running it with the necessary
+environment variables
+
+```sh
+docker run -d -e API_KEY=123 -e ZONE_ID=023e105f4ecef8ad9ca31a8372d0c353 -e DOMAIN_NAMES=dyndns.example.com,example.com --restart=always mxmlndml/cloudflare-dynamic-dns
+```
+
+Alternatively you can copy the `docker-compose.yml` from this repository into an
+empty directory of your machine, edit the environment variables and start the
+container with `docker compose`
+
+```sh
+docker compose up -d
+```
+
+## Configuration
+
+You can configure this Docker container using environment variables. Here's a
+breakdown of the available configuration variables:
+
+- **`API_KEY`** _required_
+  \
+  Cloudflare API token with `Zone Settings:Read`, `Zone:Read` and `DNS:Edit`
+  permissions
+- **`ZONE_ID`** _required_
+  \
+  Zone ID of your website (in the right sidebar on the overview page of your
+  site)
+- **`DOMAIN_NAMES`** _required_
+  \
+  List of DNS A records that should store your public IP address delimited by a
+  comma (and only a comma)
+- **`INTERVAL`** _defaults to `5`_
+  \
+  Time interval in minutes between DNS updates
+- **`LOG_LEVEL`** _defaults to `INFO`_
+  \
+  Logging level for the container, either `DEBUG`, `INFO`, `WARN` or `ERROR`