Issue building docker-compose example file for balena

[klowd92]

When i try to build the docker-compose.yml example given, or similar variants, i get an error:
ben@BENCHRO-LT-IL:/tmp/balena-mdns-publisher$ balena build -d raspberrypi4-64 -A aarch64 --debug
[debug] new argv=[/home/ben/balena/balena-cli/balena,/snapshot/balena-cli/bin/balena,build,-d,raspberrypi4-64,-A,aarch64] length=7
[debug] Deprecation check: 0.32313 days since last npm registry query for next major version release date.
[debug] Will not query the registry again until at least 7 days have passed.
[Debug] Parsing input...
[Debug] Loading project...
[Debug] Resolving project...
[Debug] docker-compose.yml file found at "/tmp/balena-mdns-publisher"
[Debug] Creating project...
[Error] Build failed.
data/balena-mdns-publisher should NOT have additional properties

Here is the docker-compose (it includes proper spacing which are deleted in the comments):

balena-mdns-publisher:
image: 'balena/balena-mdns-publisher:master'
network_mode: host
cap_add:
- SYS_RESOURCE
- SYS_ADMIN
security_opt:
- 'apparmor:unconfined'
tmpfs:
- /run
- /sys/fs/cgroup
labels:
io.balena.features.dbus: '1'
environment:
CONFD_BACKEND: ENV
MDNS_TLD: bentest.solaredge.tcp.local
MDNS_SUBDOMAINS: >-
["admin", "api", ...]
MDNS_API_TOKEN: 1234567890abcdef
DBUS_SESSION_BUS_ADDRESS: 'unix:path=/host/run/dbus/system_bus_socket'
BALENA_ROOT_CA: >-
1234567890abcdef