How to run MongoDB container

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Here’s a simple Docker Compose file to run a MongoDB container:

version: '3.8'
services:
  mongo:
    image: mongo:latest
    container_name: mongodb
    ports:
      - "27017:27017"
    environment:
      MONGO_INITDB_ROOT_USERNAME: root
      MONGO_INITDB_ROOT_PASSWORD: example
    volumes:
      - mongo_data:/data/db
volumes:
  mongo_data:

Explanation:

• version: Specifies the Docker Compose file version.
• services: Defines the services to be run. Here, we have one service, mongo.
• image: The Docker image for MongoDB.
• container_name: The name of the MongoDB container.
• ports: Maps port 27017 of the container to port 27017 on your host machine.
• environment: Sets environment variables for the MongoDB root username and password. You can change these values as needed.
• volumes: Mounts a named volume (mongo_data) to persist MongoDB data even if the container is removed.

Running the Container

To start the MongoDB container using this Docker Compose file:

1. Save the above YAML configuration in a file named docker-compose.yml.
2. Open a terminal and navigate to the directory where the file is saved.
3. Run the following command:

docker-compose up -d

This will start the MongoDB container in detached mode. You can then connect to MongoDB at localhost:27017 with the credentials specified in the environment variables.