How to turn off Sanoid's snapshotting for a subtree of datasets?

I'd like to set up [Sanoid](https://github.com/jimsalterjrs/sanoid) to create snapshots of my system dataset, except for the Docker images under /var/lib/docker. I have the following two templates:

[template_system]
        frequently = 0
        hourly = 0
        daily = 5
        monthly = 3
        yearly = 0
        autosnap = yes
        autoprune = yes
        
[template_ignore]
        autoprune = no
        autosnap = no
        monitor = no
        frequently = 0
        hourly = 0
        daily = 0
        monthly = 0
        yearly = 0

AFAIU, ignore shouldn't create any snapshots. I am then using these two templates in the following way:

[builtin/ROOT]
        use_template = system
        recursive = yes

[builtin/ROOT/ubuntu/var/lib/docker]
        process_children_only = yes
        use_template = ignore
        recursive = yes

However, with these settings, I am still seeing snapshots getting generated for builtin/ROOT/ubuntu/var/lib/docker, e.g.:

builtin/ROOT/ubuntu/var/lib/docker/8882d709e8d82bb317bb5b33065e0de6f0cdcc9dab4f6513eb0ac811a3893b47@591379486
builtin/ROOT/ubuntu/var/lib/docker/8882d709e8d82bb317bb5b33065e0de6f0cdcc9dab4f6513eb0ac811a3893b47@autosnap_2024-04-23_10:54:36_daily
builtin/ROOT/ubuntu/var/lib/docker/8882d709e8d82bb317bb5b33065e0de6f0cdcc9dab4f6513eb0ac811a3893b47@autosnap_2024-04-24_04:17:46_daily
builtin/ROOT/ubuntu/var/lib/docker/8882d709e8d82bb317bb5b33065e0de6f0cdcc9dab4f6513eb0ac811a3893b47@autosnap_2024-04-25_01:50:31_daily
builtin/ROOT/ubuntu/var/lib/docker/8882d709e8d82bb317bb5b33065e0de6f0cdcc9dab4f6513eb0ac811a3893b47@autosnap_2024-04-26_04:33:42_daily
builtin/ROOT/ubuntu/var/lib/docker/8882d709e8d82bb317bb5b33065e0de6f0cdcc9dab4f6513eb0ac811a3893b47@autosnap_2024-04-28_09:52:35_daily
builtin/ROOT/ubuntu/var/lib/docker/8882d709e8d82bb317bb5b33065e0de6f0cdcc9dab4f6513eb0ac811a3893b47@autosnap_2024-04-28_10:15:00_monthly

For comparison, for system datasets I have the same snapshots created, *and also monthly ones*:

builtin/ROOT/ubuntu/var/lib@autosnap_2024-04-14_14:01:03_monthly
builtin/ROOT/ubuntu/var/lib@autosnap_2024-04-23_10:54:36_daily
builtin/ROOT/ubuntu/var/lib@autosnap_2024-04-24_04:17:46_daily
builtin/ROOT/ubuntu/var/lib@autosnap_2024-04-25_01:50:31_daily
builtin/ROOT/ubuntu/var/lib@autosnap_2024-04-26_04:33:42_daily
builtin/ROOT/ubuntu/var/lib@autosnap_2024-04-28_09:52:35_daily

So it seems ignore's monthly and system's daily settings are applied to datasets under builtin/ROOT/ubuntu/var/lib/docker, which is of course not what I want. **I would like Sanoid to create neither daily nor monthly snapshots for those datasets. How do I achieve that?**