Update the way that pleroma background is set

src/freedombone-app-pleroma

@@ -504,6 +504,8 @@ function pleroma_create_config {
         domain_port=80
     fi
 
+    pleroma_background_image='aurora_borealis.jpg'
+
     { echo 'use Mix.Config';
       echo '';
       echo 'config :pleroma, Pleroma.Web.Endpoint,';
@@ -551,7 +553,7 @@ function pleroma_create_config {
       echo '  logo: "/static/logo.png",';
       echo '  logo_mask: true,';
       echo '  logo_margin: "0.1em",';
-      echo "  background: \"/static/aurora_borealis.jpg\",";
+      echo "  background: \"/static/$pleroma_background_image\",";
       echo '  redirect_root_no_login: "/main/all",';
       echo '  redirect_root_login: "/main/friends",';
       echo '  show_instance_panel: true,';

src/freedombone-utils-gnusocialtools

@@ -164,11 +164,17 @@ function pleroma_set_background_image_from_url {
             cp "bg_custom.${ext}" "static/bg_custom.${ext}"
             chown www-data:www-data "static/bg_custom.${ext}"
             sed -i "s|\"background\":.*|\"background\": \"/static/bg_custom.${ext}\",|g" static/config.json
+            if [ -f "$pleroma_secret" ]; then
+                sed -i "s|\"background\":.*|\"background\": \"/static/bg_custom.${ext}\",|g" "$pleroma_secret"
+            fi
         fi
         if [ -d priv/static/static ]; then
             cp "bg_custom.${ext}" "priv/static/static/bg_custom.${ext}"
             chown www-data:www-data "priv/static/static/bg_custom.${ext}"
             sed -i "s|\"background\":.*|\"background\": \"/static/bg_custom.${ext}\",|g" priv/static/static/config.json
+            if [ -f "$pleroma_secret" ]; then
+                sed -i "s|\"background\":.*|\"background\": \"/static/bg_custom.${ext}\",|g" "$pleroma_secret"
+            fi
         fi
 
         if [[ "$basedir" != "$PLEROMA_DIR" ]]; then