Ease use of Owncloud Phoenix (#286)

* add tweak to serve phoenix from /files
* auto enable oidc
* simplify setup by adding root directly to kweb
* add some descriptions for overriding kweb configuration
* add some configuration and clean up

calendar/README.md

@@ -0,0 +1 @@
+# This is for the moment only for testing purposes

calendar/calendar.yml

@@ -0,0 +1,10 @@
+version: "3.5"
+services:
+  web:
+    volumes:
+      - ./calendar/kweb-calendar.cfg:/etc/kweb-extras/kweb-calendar.cfg
+      - ./kopano-calendar-0.20.0/:/usr/share/kopano-calendar/
+      - ./kopano-calendar-0.20.0/config.json.in:/var/www/api/config/v1/kopano/calendar/config.json
+  kopano_grapi:
+    environment:
+      - KCCONF_GRAPI_ENABLE_EXPERIMENTAL_ENDPOINTS=yes

calendar/kweb-calendar.cfg

@@ -0,0 +1 @@
+staticpwa /calendar /usr/share/kopano-calendar/calendar-webapp