ci: add apt confg, background updates

conveyor-release.conf

@@ -10,11 +10,11 @@ app {
 
   site {
     copy-to = "/site"
-  }
-  // will overwrite base-url
-  github {
-    oauth-token = ${env.CONVEYOR_PAT}
-    pages-branch = "gh-pages"
+    // will overwrite base-url
+    github {
+      oauth-token = ${env.CONVEYOR_PAT}
+      pages-branch = "gh-pages"
+    }
   }
 
   windows {

conveyor.conf

@@ -9,7 +9,7 @@ app {
   homepage = "https://wgtunnel.com"
   vcs-url = "https://github.com/wgtunnel/desktop"
 
-  updates = manual
+  updates = background
 
   icons = ["icon.png"]
 
@@ -78,6 +78,12 @@ app {
       email = "support@wgtunnel.com"
     }
 
+    apt {
+      codename = "stable"
+      component = "main"
+      architectures = ["amd64"]
+    }
+
     desktop-file {
       "Desktop Entry" {
         Categories = "Network;Security;Settings;Utility;"