How I can run elasticsearch locally for development using docker?

#docker #elasticsearch #tutorial

When I was running elastinc search using oficial docker images from docker hub: https://hub.docker.com/_/elasticsearch/

I used bind mounts at my docker-compose.yml:

version: '3.8'

services:

  elasticsearch:
    image: elasticsearch:8.15.3
    environment:
      - ES_JAVA_OPTS=-Xms512m -Xmx512m
      - discovery.type=single-node
      - xpack.security.enabled=false
    volumes:
      - ./volumes/elastic:/usr/share/elasticsearch/data
    ports:
      - "9200:9200"
      - "9300:9300"
    deploy:
      restart_policy:
        condition: always

That resulted that the mounted volume at /usr/share/elasticsearch/data having user ownership as root. Thus that made the elasticsearch to hand and terminate the container.

Therefore, I overrode the entrypoint using a Dockerfile:

FROM elasticsearch:8.15.3

COPY --chown=root:root --chmod=0755 ./entrypoint.sh /usr/local/bin/entrypoint.sh

USER root
ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]

And upon my custom entrypoint I call the existing one after I fix the nessesary file permissions:

#!/bin/bash

ls -l /usr/share/elasticsearch
mkdir -p /usr/share/elasticsearch/data
chown -R elasticsearch:elasticsearch /usr/share/elasticsearch/data


su -m elasticsearch /usr/local/bin/docker-entrypoint.sh "$@"

The idea is to launch the images entrypoint from my own one, as elasticsearch user after, as root first, fixed any permission upon my volumes.