Remove extra docker-compose and .env.exmple files.

docker/matrix/element/config.json

@@ -1,30 +1,34 @@
 {
   "default_server_config": {
     "m.homeserver": {
-      "base_url": "http://localhost:8008",
-      "server_name": "localhost"
+      "base_url": "https://matrix.mosaicstack.dev",
+      "server_name": "matrix.mosaicstack.dev"
+    },
+    "m.identity_server": {
+      "base_url": "https://vector.im"
     }
   },
-  "brand": "Mosaic Stack Dev",
+  "brand": "Mosaic Chat",
+  "integrations_ui_url": "https://scalar.vector.im/",
+  "integrations_rest_url": "https://scalar.vector.im/api",
+  "integrations_widgets_urls": [
+    "https://scalar.vector.im/_matrix/integrations/v1",
+    "https://scalar.vector.im/api",
+    "https://scalar-staging.vector.im/_matrix/integrations/v1",
+    "https://scalar-staging.vector.im/api",
+    "https://scalar-staging.riot.im/scalar/api"
+  ],
+  "disable_custom_urls": false,
+  "disable_guests": true,
+  "disable_login_language_selector": false,
+  "disable_3pid_login": false,
+  "default_country_code": "US",
+  "show_labs_settings": false,
   "default_theme": "dark",
   "room_directory": {
-    "servers": ["localhost"]
+    "servers": ["matrix.mosaicstack.dev"]
   },
-  "features": {
-    "feature_video_rooms": false,
-    "feature_group_calls": false
-  },
-  "show_labs_settings": true,
-  "piwik": false,
-  "posthog": {
-    "enabled": false
-  },
-  "privacy_policy_url": null,
-  "terms_and_conditions_links": [],
   "setting_defaults": {
-    "breadcrumbs": true,
-    "custom_themes": []
-  },
-  "disable_guests": true,
-  "disable_3pid_login": true
+    "breadcrumbs": true
+  }
 }