# Day-17 of #90DaysOfDevOps

# Docker Project for DevOps Engineers

Welcome to Day 17 of the **#90DaysOfDevOps** challenge! Today, we dive into an exciting hands-on project to showcase Docker’s capabilities. We will work with two applications: a Django Notes App and a Node.js To-Do App. Let's get started! 🚀

## What is a Dockerfile?

A Dockerfile is a script that contains a set of instructions to build a Docker container. It defines the base image, dependencies, working directory, ports, and the command to run the application. For more details, check out this [guide](https://rushikesh-mashidkar.hashnode.dev/dockerfile-docker-compose-swarm-and-volumes).

---

## Project 1: Python (Django Notes App)

### Steps:

#### 1\. Clone the Repository:

```bash
git clone -b dev https://github.com/LondheShubham153/django-notes-app.git
cd django-notes-app
```

#### 2\. Create a Dockerfile:

```dockerfile
FROM python:3.9-slim

WORKDIR /app

COPY requirements.txt .

RUN pip install --no-cache-dir -r requirements.txt

COPY . .

EXPOSE 8000

CMD ["python", "manage.py", "runserver", "0.0.0.0:8000"]
```

#### 3\. Build and Run the Container:

```bash
docker build -t django-notes-app .
docker run -d -p 8000:8000 django-notes-app
```

#### 4\. Access the Application:

Visit `http://localhost:8000` in your browser to access the Django Notes App.

> **Tip:** Stop and remove the running container before proceeding to the second project to avoid port conflicts.

---

## Project 2: Node.js (To-Do App)

### Steps:

#### 1\. Clone the Repository:

```bash
git clone -b LondheShubham153-patch-1 https://github.com/LondheShubham153/node-todo-cicd.git
cd node-todo-cicd
```

#### 2\. Create a Dockerfile:

```dockerfile
FROM node:12.2.0-alpine

WORKDIR /app

COPY . /app

RUN npm install

EXPOSE 8000

CMD ["node", "app.js"]
```

#### 3\. Build and Run the Container:

```bash
docker build -t node-todo-app .
docker run -d -p 8000:8000 node-todo-app
```

#### 4\. Access the Application:

Visit `http://localhost:8000` in your browser to access the Node.js To-Do App.

---

## Pushing Images to Docker Hub

### 1\. Log in to Docker Hub:

```bash
docker login
```

Provide your Docker Hub credentials when prompted.

### 2\. Tag and Push the Images:

#### Django Notes App:

```bash
docker tag django-notes-app yourusername/django-notes-app:latest
docker push yourusername/django-notes-app:latest
```

#### Node.js To-Do App:

```bash
docker tag node-todo-app yourusername/node-todo-app:latest
docker push yourusername/node-todo-app:latest
```

---

## Resources:

* [Dockerfile Reference Project](https://youtu.be/Tevxhn6Odc8)
    
* [Comprehensive Docker Bootcamp](https://youtube.com/playlist?list=PLlfy9GnSVerRqYJgVYO0UiExj5byjrW8u)
    

---

## Conclusion

This project demonstrates the simplicity and power of Docker for containerizing applications. Whether it's a Python-based Django app or a Node.js To-Do app, Docker streamlines the process of setting up and running your projects.

Feel free to connect and share your progress on [LinkedIn](https://www.linkedin.com/in/amitabh-devops/). Let’s keep the #90DaysOfDevOps momentum going!