Fixes backup restore by recreating the MariaDB account RomM uses over the internal loopback connection, including backups that restore the database root credential.

docker-images/mariadb/startos-entrypoint.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+set -eu
+
+/usr/local/bin/docker-entrypoint.sh "$@" &
+server_pid=$!
+
+trap 'kill -TERM "$server_pid" 2>/dev/null || true; wait "$server_pid"' TERM INT
+
+root_password=''
+
+until {
+  if mariadb --protocol=socket --user=root --password="$MARIADB_ROOT_PASSWORD" --execute 'SELECT 1' >/dev/null 2>&1; then
+    root_password="$MARIADB_ROOT_PASSWORD"
+  elif mariadb --protocol=socket --user=root --password="$MARIADB_PASSWORD" --execute 'SELECT 1' >/dev/null 2>&1; then
+    root_password="$MARIADB_PASSWORD"
+  else
+    false
+  fi
+}; do
+  if ! kill -0 "$server_pid" 2>/dev/null; then
+    wait "$server_pid"
+    exit $?
+  fi
+  sleep 1
+done
+
+mariadb --protocol=socket --user=root --password="$root_password" --execute "CREATE USER IF NOT EXISTS 'romm'@'127.0.0.1' IDENTIFIED BY '$MARIADB_PASSWORD'; GRANT ALL PRIVILEGES ON romm.* TO 'romm'@'127.0.0.1'; FLUSH PRIVILEGES;"
+
+wait "$server_pid"