Aktualisieren README.md

README.md

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+# ivatar / libravatar as docker image
+This is [ivatar](https://www.libravatar.org) as a docker image. The image is freshly built every month from the [ivatar repository at git.linux-kernel.at](https://git.linux-kernel.at/oliver/ivatar).
+
+I couldn't deeply test the image, so please use it with caution.
+
+## How to use this image
+
+    docker run --name ivatar -p 8080:8080 -d registry.gudd-it.de/bastian/ivatar-docker
+    
+Please be aware that this will not persist any data.
+
+## Environment Variables
+
+| Variable 					    | Description   | Default from [config.py](https://git.linux-kernel.at/oliver/ivatar/-/blob/master/config.py)
+|--                             |--             |--                                                                                          |
+| `SITE_NAME`                   |  		        | `libravatar`
+| `SECURE_BASE_URL`             |  	            | `https://avatars.linux-kernel.at/avatar/`
+| `BASE_URL`                    |   	        | `http://avatars.linux-kernel.at/avatar/`
+| `EMAIL_BACKEND` 		        |  		        | -
+| `IVATAR_MAILGUN_API_KEY` 	    |  		        | -
+| `IVATAR_MAILGUN_SENDER_DOMAIN`|  		        | -
+| `SERVER_EMAIL` 	            |  		        | `ivatar@mg.linux-kernel.at`
+| `DEFAULT_FROM_EMAIL` 	        |  		        | `ivatar@mg.linux-kernel.at`
+| `MYSQL_DATABASE`              |  		        | -
+| `MYSQL_USER`                  |  		        | -
+| `MYSQL_PASSWORD`              |  		        | -
+| `POSTGRESQL_DATABASE` 	    |  		        | -
+| `POSTGRESQL_USER` 	        |  		        | -
+| `POSTGRESQL_PASSWORD` 	    |  		        | -
+
+
+## To Do
+- Figure out where the pictures are stored
+- Write some setup instructions