Missing beats setup for index

[bluepuma77]

When using the provided docker-compose.yml, the beats containers show a gazillion errors.

It seems to me the index setup was not performed (doc):

"Running Metricbeat with the setup command will create the index pattern and load visualizations , dashboards, and machine learning jobs"

docker run \
docker.elastic.co/beats/metricbeat:8.8.2 \
setup -E setup.kibana.host=kibana:5601 \
-E output.elasticsearch.hosts=["elasticsearch:9200"]

It would be great if:

1. beats would do that automatically
2. beats had a --ensureIndex command line option
3. (elastic) setup container would create the indexes
4. an additional beats setup container would create the indexes