backup.sh: omgå bugg oppstrøms

rrsync på NixOS fungerer ikke helt som vanlig etter den ble oppgradert
fra v3.4.1 -> v3.4.4.

Se https://github.com/RsyncProject/rsync/issues/922

backup.sh

@@ -288,21 +288,21 @@ host_ssh_hostname["isvegg"]="isvegg-backup"
 # gitea (kommode)
 hosts+=("gitea")
 gitea_includes=(
-  "/"
+  "."
 )
 host_ssh_hostname["gitea"]="gitea-backup"
 
 # mediawiki (bekkalokk)
 hosts+=("mediawiki")
 mediawiki_includes=(
-  "/"
+  "."
 )
 host_ssh_hostname["mediawiki"]="mediawiki-backup"
 
 # matrix media store (bicep)
 hosts+=("matrix_media_store")
 matrix_media_store_includes=(
-  "/"
+  "."
 )
 matrix_media_store_excludes=(
   "/local_thumbnails"
@@ -315,7 +315,7 @@ host_ssh_hostname["matrix_media_store"]="matrix-media-store-backup"
 # matrix ooye
 hosts+=("matrix_ooye")
 matrix_ooye_includes=(
-  "/"
+  "."
 )
 matrix_media_store_excludes=(
   "/registration.yaml"
@@ -339,7 +339,7 @@ host_ssh_hostname["postgresql"]="postgresql-backup"
 # vaultwarden (bekkalokk)
 hosts+=("vaultwarden")
 vaultwarden_includes=(
-  "/"
+  "."
 )
 vaultwarden_excludes=(
   "/icon_cache"
@@ -357,7 +357,7 @@ host_ssh_hostname["snappymail"]="snappymail-backup"
 # uptime-kuma (ildkule)
 hosts+=("uptime_kuma")
 uptime_kuma_includes=(
-  "/"
+  "."
 )
 host_ssh_hostname["uptime_kuma"]="uptime-kuma-backup"