feat(xo-server): add robots.txt

Fixes zammad#21489

CHANGELOG.unreleased.md

@@ -7,6 +7,8 @@
 
 > Users must be able to say: “Nice enhancement, I'm eager to test it”
 
+- Disable search engine indexing via a `robots.txt`
+
 ### Bug fixes
 
 > Users must be able to say: “I had this issue, happy to know it's fixed”
@@ -27,4 +29,6 @@
 
 <!--packages-start-->
 
+- xo-server patch
+
 <!--packages-end-->

packages/xo-server/config.toml

@@ -143,6 +143,7 @@ port = 80
 requestTimeout = 0
 
 [http.mounts]
+'/robots.txt' = './robots.txt'
 '/' = '../xo-web/dist/'
 '/v6' = '../../@xen-orchestra/web/dist/'
 

packages/xo-server/robots.txt

@@ -0,0 +1,2 @@
+User-agent: *
+Disallow: /