update CPU cores during first setup + fix SC (#2468)

Author: enoch85

apps/imaginary.sh

@@ -125,7 +125,7 @@ install_if_not ffmpeg
 if which nproc >/dev/null 2>&1
 then
     nextcloud_occ config:system:set preview_concurrency_new --value="$(nproc)"
-    nextcloud_occ config:system:set preview_concurrency_all --value="$(expr $(nproc) '*' 2)"
+    nextcloud_occ config:system:set preview_concurrency_all --value="$(($(nproc)*2))""
 else
     nextcloud_occ config:system:set preview_concurrency_new --value="2"
     nextcloud_occ config:system:set preview_concurrency_all --value="4"

nextcloud-startup-script.sh

@@ -286,6 +286,7 @@ It will also do the following:
 - Set correct Rewriterules for Nextcloud
 - Copy content from .htaccess to .user.ini (because we use php-fpm)
 - Add additional options if you choose them
+- Set correct CPU cores for Imaginary
 - And more..."
 
 msg_box "PLEASE NOTE:
@@ -480,6 +481,16 @@ else
     calculate_php_fpm
 fi
 
+# Set correct amount of CPUs for Imaginary
+if which nproc >/dev/null 2>&1
+then
+    nextcloud_occ config:system:set preview_concurrency_new --value="$(nproc)"
+    nextcloud_occ config:system:set preview_concurrency_all --value="$(($(nproc)*2))"
+else
+    nextcloud_occ config:system:set preview_concurrency_new --value="2"
+    nextcloud_occ config:system:set preview_concurrency_all --value="4"
+fi
+
 # Add temporary fix if needed
 if network_ok
 then