Nextcloud Talk: fix virtual-background web check by

- adding explicit MIME types for .wasm and .tflite in internal Nginx
- relaxing CSP (script-src: allow 'unsafe-eval') for WebAssembly
- removing obsolete turnserver draft.
Details: https://chatgpt.com/share/68d7dd39-50b8-800f-ab59-cfb1d3cf07cb

roles/web-app-nextcloud/config/main.yml

@@ -6,6 +6,8 @@ server:
         unsafe-inline:  true
       script-src-elem:
         unsafe-inline:  true
+      script-src:
+        unsafe-eval:    true
     whitelist:
       font-src:
         - "data:"

roles/web-app-nextcloud/templates/config/turnserver.config.php.j2.draft

@@ -1,14 +0,0 @@
-<?php
-# Activates the turn server
-# @see https://nextcloud-talk.readthedocs.io/en/latest/TURN/
-
-return [
-  'turn_servers' => [
-    [
-        'host' => 'coturn',
-        'port' => {{ NEXTCLOUD_TALK_TURN_ONBOARD_PORT }},
-        'secret' => 'my-secret-key',
-        'protocols' => 'udp,tcp'
-    ],
-  ],
-];

roles/web-app-nextcloud/templates/nginx/docker.conf.j2

@@ -19,6 +19,8 @@ http {
     default_type  application/octet-stream;
     types {
         application/javascript   mjs;
+        application/wasm         wasm;
+        application/octet-stream tflite;
     }
     log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                       '$status $body_bytes_sent "$http_referer" '