Init Mongo in Docker

database  · 

This artile introduces a method about how to initialize data for mongodb in docker. We will use mongoimport to import data after the mongodb started in docker.
We start another container used to execute mongoimport, which is mongo-seed.

version: "3.5"
services:
  mongo:
    image: mongo:latest
    environment:
      MONGO_INITDB_ROOT_USERNAME:
      MONGO_INITDB_ROOT_PASSWORD:
    ports:
      - "27018:27017"
    networks:
      - go-mongo
    healthcheck:
      test: echo 'db.runCommand("ping").ok' | mongosh localhost:27017/testing --quiet
  mongo-seed:
    image: mongo:latest
    restart: no
    environment:
      MONGO_HOSTNAME: 'mongo'
      MONGO_DBNAME: 'testing'
    volumes:
      - ./db/mongo/:/mongo-seed/
    command: |
      bash /mongo-seed/mongo_seed.sh
    depends_on:
      - mongo
    networks:
      - go-mongo

networks:
  go-mongo: {}

mongo_seed.sh will read json files and import it into mongodb.

#!/bin/bash

cd "$(dirname "$0")"
SHELL_DIR="$(pwd)"

# load dotenv
if [ -f `${SHELL_DIR}/.env` ]
then
  export $(cat .env | xargs)
fi

for jsonfile in `ls -l ${SHELL_DIR} | grep '^-' | grep '.json$' | awk '{print $NF}'`
do
  mongoimport --host $MONGO_HOST --port $MONGO_PORT \
    --db $MONGO_DB \
    --file $jsonfile --collection ${jsonfile%.*}
done

Reference

  1. mongo-in-docker