adding README

README.md

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+# DockerOwncloudClient
+
+This is a dockerized version of a OwnCloud Client.
+
+## Environment-variables
+
+Set the following variables with the -e tag.
+
+| Name		| Usage | Default |
+| --------- | ----- | ------- |
+| USER		| username of OwnCloud server | admin |
+| PASSWORD  | password of OwnCloud server | admin |
+| URL		| url of OwnCloud server (dont forget the http(s)://) | localhost |
+
+## Volumes
+
+Set the following volumes with the -v tag.
+
+| Volume-Name | Container mount | Description |
+| ----------- | --------------- | ----------- |
+| data		  | /data			| directory for the owncloud contents |
+
+## Ports
+
+There are no ports that get opened up.
+
+## Example run-command
+
+``` docker run --name owncloudcli -v owncloudcli:/data --restart unless-stopped -e USER=admin1 -e PASSWORD=password1 -e URL='example.com' -d tiynger/owncloudclient ```