diff --git a/docker.yml b/docker.yml
index 7611b97..08aeed8 100644
--- a/docker.yml
+++ b/docker.yml
@@ -114,6 +114,24 @@
             "ip6tables": true
           }
 
+    - name: mariadb defaults
+      copy:
+        dest: "/home/docker/mariadb.env"
+        content: |
+          MARIADB_RANDOM_ROOT_PASSWORD=1
+          MARIADB_AUTO_UPGRADE=1
+          MARIADB_INITDB_SKIP_TZINFO=1
+          # from here: save memory
+          MARIADB_KEY_BUFFER_SIZE=1M
+          MARIADB_MYISAMCHK_KEY_BUFFER_SIZE=1M
+          MARIADB_INNODB_BUFFER_POOL_SIZE=10M
+          MARIADB_INNODB_LOG_BUFFER_SIZE=512K
+          MARIADB_MYISAM_SORT_BUFFER_SIZE=64K
+          MARIADB_MYISAMCHK_SORT_BUFFER_SIZE=64K
+          MARIADB_READ_BUFFER_SIZE=8K
+          MARIADB_READ_RND_BUFFER_SIZE=8K
+          MARIADB_SORT_BUFFER_SIZE=64K
+
     - name: /usr/local/sbin/autoupdate.d/docker.update
       blockinfile:
         path: /usr/local/sbin/autoupdate.d/docker.update