How to create ingest pipeline for elasticsearch in kubernetes context?

I am shipping a csv file from filebeat to elasticsearch. I understand that I need to use an ingest pipeline to parse the csv data prior to it being stored in elastic, similar to what is described in this answer

From what I understand, you have to run a curl command to create the pipeline in elasticsearch, something like:

curl -XPUT "$CLOUD_URL/_ingest/pipeline/bano" -u elastic:$CLOUD_PASSWORD -H 'Content-Type: application/json' -d'@cloud/ingest-bano.json' ; echo

I am just wondering how is this done in a kubernetes context, there is nowhere I can put a curl command in the container setup, everything is based off configuration files.

I am just wondering how to do this when filebeat and elasticsearch are running in kubernetes.