Grant access permission to file when mounting from host Below is except of my docker-compose.yml file

I am trying to mount from host file inside the container, which works i.e. able to mount
but then I need to give it permission (my clumsy chown command, below).

I am not sure where to run it as wherever I place my (command: chown,-R,elasticsearch,/usr/share/elasticsearch/config/) 

It gives me error that 'no such file or directory' which I think: my code run before volume is attached.

I tried placing it after container_name as well, same 'no such file or directory'

Any advise how to do it?

image: docker.elastic.co/elasticsearch/elasticsearch:7.6.2
container_name: elasticsearch


volumes:
  - ./elastic-stack-ca.p12:/usr/share/elasticsearch/config/elastic-stack-ca.p12
  - esdata1:/usr/share/elasticsearch/data
*command: chown,-R,elasticsearch,/usr/share/elasticsearch/config/*


Here is full yml, if it is helpful

    version: '3'

services:

  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.6.2
    container_name: elasticsearch
    command:
     chown,-R,elasticsearch,/usr/share/elasticsearch/config/
    environment:
      - node.name=elasticsearch
      - discovery.seed_hosts=elasticsearch
      - cluster.initial_master_nodes=elasticsearch
      - cluster.name=docker-cluster
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"

    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - ./elastic-stack-ca.p12:/usr/share/elasticsearch/config/elastic-stack-ca.p12
      - esdata1:/usr/share/elasticsearch/data
    ports:
      - 9200:9200

  kibana:
    image: docker.elastic.co/kibana/kibana:7.6.2
    container_name: kibana
    environment:
      ELASTICSEARCH_URL: "http://elasticsearch:9200"
      ELASTICSEARCH_USERNAME: "kibana"
      ELASTICSEARCH_PASSWORD: "kibana"
    ports:
      - 5601:5601
    depends_on:
      - elasticsearch

volumes:
  esdata1:
    driver: local
I don't think volumes can be specified with relative paths. 
Put an absolute path instead of ./elastic-stack-ca.p12 and you should be fine.