Change data location from /share to /data; Introduce eval

eufy-ha-mqtt-bridge/DOCS.md

@@ -0,0 +1,32 @@
+# Home Assistant Add-on: Eufy Home Assistant MQTT Bridge
+
+## Configuration
+### `eval` (string)
+Allows to pass some bash commands to run every time before the start of the bridge.
+
+Multi-line commands are possible but must end with `;`. See examples below.
+
+You might want to disable this after a run.
+
+*Only use when you know what you are doing!*
+
+
+#### Example: Symlink data dir to `shares`
+```yaml
+eval: |
+  bashio::log.info "Symlinking data dir";
+  mkdir -p /share/eufy-ha-mqtt-bridge/data;
+  rm -rf /app/data;
+  ln -s /share/eufy-ha-mqtt-bridge/data /app;
+```
+
+#### Example: Export payloads to file 
+To help adding more devices it is crucial to provide some information, see https://github.com/matijse/eufy-ha-mqtt-bridge/issues/7.
+
+```yaml
+eval: >
+  sqlite3 -csv /app/data/database.sqlite "SELECT "'*'" FROM push_payloads" >
+  /share/export.csv
+```
+
+*Note:* Asterisk must be removed from the double quotes.