diff --git a/dokuwiki/admin.sh b/dokuwiki/admin.sh
new file mode 100755
index 0000000..5486cd0
--- /dev/null
+++ b/dokuwiki/admin.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+#
+# dokuwiki backup/restore script
+#
+
+ACTION=${1:?action is required}
+FILENAME=${2:-dw-backup-$(date +%Y%m%d-%H%M%S).tar.gz}
+CONTAINER=${3:-dokuwiki_dokuwiki_1}
+
+do_help() {
+    echo 'USAGE: ./admin.sh ACTION [FILENAME] [CONTAINER]'
+}
+
+do_backup() {
+    echo "backup to $FILENAME"
+    docker run --rm --volumes-from $CONTAINER -v `pwd`:/backup alpine \
+           tar czf /backup/$FILENAME /var/www/html
+}
+
+do_restore() {
+    echo "restore from $FILENAME"
+    docker run --rm --volumes-from $CONTAINER -v `pwd`:/backup alpine \
+           tar xzf /backup/$FILENAME -C /
+}
+
+main() {
+    case "$ACTION" in
+        backup)
+            do_backup
+            ;;
+        restore)
+            do_restore
+            ;;
+        *)
+            do_help
+            exit 1;
+            ;;
+    esac
+}
+
+main
diff --git a/dokuwiki/backup.sh b/dokuwiki/backup.sh
deleted file mode 100755
index ab786be..0000000
--- a/dokuwiki/backup.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/bin/bash
-#
-# dokuwiki backup script
-#
-
-docker run --rm --volumes-from dokuwiki_dokuwiki_1 -v `pwd`:/backup alpine \
-       tar czf /backup/dw-backup-$(date +%Y%m%d-%H%M%S).tar.gz /var/www/html