run php with dedicated user

rootfs/app/entrypoint.sh

@@ -17,6 +17,29 @@ chown "${PUID}:${GROUPNAME}" "${WEBROOT}" -R
 find "${WEBROOT}" -type d -exec chmod 0755 {} \;
 find "${WEBROOT}" -type f -exec chmod 0644 {} \;
 
+FPM_MAX_CHILDREN=${FPM_MAX_CHILDREN:-5}
+FPM_START_SERVERS=${FPM_START_SERVERS:-1}
+FPM_MIN_SPARE_SERVERS=${FPM_MIN_SPARE_SERVERS:-1}
+FPM_MAX_SPARE_SERVERS=${FPM_MAX_SPARE_SERVERS:-3}
+
+# set php config
+case "${PHP}" in
+  "php84"|"php83"|"php82")
+    cat >"/etc/${PHP}/php-fpm-d/www.conf" <<EOF
+[www]
+user = ${USERNAME}
+group = ${GROUPNAME}
+listen = 127.0.0.1:9000
+pm = dynamic
+pm.max_children = ${FPM_MAX_CHILDREN}
+pm.start_servers = ${FPM_START_SERVERS}
+pm.min_spare_servers = ${FPM_MIN_SPARE_SERVERS}
+pm.max_spare_servers = ${FPM_MAX_SPARE_SERVERS}
+EOF
+    ;;
+    *) ;;
+esac
+
 # start php
 case "${PHP}" in
     "php84")