replace theme.css with tp imports instead of sed

docker-mods/emby/root/etc/cont-init.d/98-themepark

@@ -34,12 +34,5 @@ if [[ -z ${TP_THEME} ]]; then
 fi
 
 # Adding stylesheets
-if ! grep -q "${TP_DOMAIN}/css/base" /app/emby/dashboard-ui/index.html; then
-    echo '---------------------------'
-    echo '|  Adding the stylesheet  |'
-    echo '---------------------------'
-    sed -i "s/<\/body>/<link rel='stylesheet' href='https:\/\/${TP_DOMAIN}\/css\/base\/emby\/emby-base.css'><\/body> /g" /app/emby/dashboard-ui/index.html
-    sed -i "s/<\/body>/<link rel='stylesheet' href='https:\/\/${TP_DOMAIN}\/css\/${THEME_TYPE}\/${TP_THEME}.css'><\/body> /g" /app/emby/dashboard-ui/index.html
-    printf 'Stylesheet set to %s\n' "${TP_THEME}
-    "
-fi
+printf '%s\n' "@import url('https://${TP_DOMAIN}/css/${THEME_TYPE}/${TP_THEME}.css');" "@import url('https://${TP_DOMAIN}/css/base/emby/emby-base.css');" > /app/emby/dashboard-ui/modules/themes/light/theme.css
+printf 'Stylesheet set to %s\n' "${TP_THEME}"