akashdeep023/docker-text

This repository is created as part of our journey to learn Docker from scratch. We started exploring Docker to simplify development, deployment, and environment management using containers. Here, you'll find basic examples, Dockerfiles, Compose setups, and real-world use cases that helped us understand how Docker works in practice.

docker-test

---

Use terminal

Install mongo docker image

docker run -d \
-p27017:27017 \
--name mongo \
--network mongo-network \
-e MONGO_INITDB_ROOT_USERNAME=admin \
-e MONGO_INITDB_ROOT_PASSWORD=password \
mongo

Install mongo-express docker image

docker run -d \
-p8081:8081 \
--name mongo-express \
--network mongo-network \
-e ME_CONFIG_MONGODB_ADMINUSERNAME=admin \
-e ME_CONFIG_MONGODB_ADMINPASSWORD=password \
-e ME_CONFIG_MONGODB_URL="mongodb://admin:password@mongo:27017/" \
mongo-express

• Make sure the mongo and mongo-express username and password are the same.

Use name.yaml file

.env file setup

MONGO_USERNAME=admin
MONGO_PASSWORD=password
MONGO_URL=mongodb://<username>:<password>@localhost:27017
MONGO_DB=database-name

name.yaml file setup

# docker compose -f mongodb.yaml up -d => start the containers in detached mode
# docker compose -f mongodb.yaml down => stop the containers
version: "3.8" # optional, specify the version of the docker-compose file format

services:
    mongo:
        image: mongo
        ports:
            - "27017:27017"
        environment:
            - MONGO_INITDB_ROOT_USERNAME=${MONGO_USERNAME} # MONGO_INITDB_ROOT_USERNAME: username
            - MONGO_INITDB_ROOT_PASSWORD=${MONGO_PASSWORD}
            - MONGO_INITDB_DATABASE=${MONGO_DB}
        volumes:
            - /c/Users/path-dir/Desktop/data:/data/db # persist data in a named volume (host_directory:/container_directory) (mongodb data path = /data/db)

    mongo-express:
        image: mongo-express
        ports:
            - "8081:8081"
        depends_on:
            - mongo
        environment:
            - ME_CONFIG_MONGODB_ADMINUSERNAME=${MONGO_USERNAME}
            - ME_CONFIG_MONGODB_ADMINPASSWORD=${MONGO_PASSWORD}
            - ME_CONFIG_MONGODB_SERVER=mongo

---

Create Dockerfile

# Build a Docker image for a Node.js application with MongoDB
# Command to build the image: docker build -t <your-dockerhub-username>/testapp .
# Command to push the image to Docker Hub: docker push <your-dockerhub-username>/testapp

# Use an official Python runtime as a parent image
FROM node

# Define environment variable
ENV MONGODB_USERNAME=admin \
    MONGODB_PASSWORD=password

# Install any needed packages specified in requirements.txt
RUN mkdir -p textapp

# Copy the current directory contents into the container at /app
COPY . /textapp

# Run app.py when the container launches
CMD ["node", "/textapp/server.js"]