Updated Cloudron (markdown)

Cloudron.md

@@ -13,3 +13,70 @@ Cloudron is a complete solution for running apps on your server and keeping them
 The source code for the package can be found [here](https://git.cloudron.io/cloudron/wekan-app/).
 
 You can also test the wekan installation on the demo Cloudron instance - https://my.demo.cloudron.io (username: cloudron password: cloudron).
+
+# Backup
+
+If those [Backup](https://github.com/wekan/wekan/wiki/Backup) ways are not easily found at Cloudron, one way is to install [Redash](https://redash.io/) and then backup this way:
+
+Redash works with this kind of queries:
+```
+{
+	"collection": "accountSettings",
+	"query": {
+		"type": 1
+	},
+	"fields": {
+		"_id": 1,
+		"booleanValue": 1,
+		"createdAt": 1,
+		"modifiedAt": 1,		
+	}
+}
+```
+So:
+
+1) Create this kind of query:
+```
+{
+	"collection": "boards"
+}
+```
+
+Later when you modify query, you can remove text like boards with double-click-with-mouse and delete-key-at-keyboard (or select characters with mouse and delete-key-at-keyboard), and then click collection/table >> button to insert name of next collection/table.
+
+2) Click Save
+
+3) Click Execute. This will cache query for use with REST API.
+
+4) Click at right top [...] => Show API key
+
+It looks like this:
+
+https://redash.example.com/api/queries/1/results.json?api_key=...
+
+5) Only when saving first collection/table, Save API key to text file script like this `dl.sh` 
+```
+#!/bin/bash
+
+# Example: ./dl.sh boards
+
+export APIKEY=https://redash.example.com/api/queries/1/results.json?api_key=...
+
+curl -o $1.json $APIKEY
+```
+
+6) Run save script like:
+```
+./dl.sh boards
+```
+Note: 1) Save 2) Execute => webbrowser can give this kind of timeout,
+but downloading with API script still works:
+
+> wekan
+> Error running query: failed communicating with server. Please check your Internet connection and try again.
+
+7) Repeat steps 1-4 and 6 for every collection/table like boards,cards, etc
+
+8) Remove from downloaded .json files extra query related data, so that it is similar like [any other Wekan database backup JSON files](https://github.com/wekan/wekan/wiki/Export-from-Wekan-Sandstorm-grain-.zip-file)
+
+9) Insert data to some other Wekan install with nosqlbooster like mentioned at page [Backup](https://github.com/wekan/wekan/wiki/Backup)