How to Deploy a Flask App with Docker & DockerHub on a Virtual Machine (AWS EC2) (2025)

Описание: 🚀 Want to *deploy a Flask app using Docker and DockerHub on AWS EC2**? In this tutorial, I’ll guide you through the **step-by-step process* to containerize your Flask app, push it to *DockerHub**, and deploy it on an **AWS EC2 instance* using Docker.

By the end of this video, you’ll learn:
✅ How to *containerize a Flask app using Docker*
✅ How to *push and pull Docker images from DockerHub*
✅ How to *deploy and run the Flask app on AWS EC2*
✅ How to *expose the Flask app to the internet using AWS security groups*

---

*🔹 What You’ll Learn in This Video:*
✔️ How to *write a Dockerfile for a Flask app*
✔️ How to *build and test a Docker image locally*
✔️ How to *upload the Docker image to DockerHub*
✔️ How to *install Docker on AWS EC2*
✔️ How to *run a Flask container on AWS EC2*

---

*🔹 Prerequisites*
✔️ *AWS Account* ([Sign Up Here](https://aws.amazon.com/free/))
✔️ *Docker & DockerHub Account* ([Sign Up Here](https://hub.docker.com/))
✔️ Basic knowledge of *Flask & Python*
✔️ A Flask app ready for deployment

---

*🔹 Step 1: Write a Dockerfile for Flask*
In your Flask project folder, create a **Dockerfile**:

```dockerfile
Use an official Python runtime as a parent image
FROM python:3.9

Set the working directory
WORKDIR /app

Copy the current directory contents into the container
COPY . /app

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

Expose the port Flask runs on
EXPOSE 5000

Define the command to run the Flask app
CMD ["python", "app.py"]
```

---

*🔹 Step 2: Build & Test the Docker Image Locally*
1️⃣ Open your terminal and navigate to your Flask app directory.
2️⃣ Run the following command to build the Docker image:

```bash
docker build -t my-flask-app .
```

3️⃣ Run the Flask container locally to test:

```bash
docker run -p 5000:5000 my-flask-app
```

4️⃣ Open your browser and go to *http://localhost:5000* to see your Flask app running.

---

*🔹 Step 3: Push the Docker Image to DockerHub*
1️⃣ Log in to DockerHub from your terminal:

```bash
docker login
```

2️⃣ Tag the Docker image with your DockerHub username:

```bash
docker tag my-flask-app your-dockerhub-username/my-flask-app
```

3️⃣ Push the image to DockerHub:

```bash
docker push your-dockerhub-username/my-flask-app
```

✅ Now your Flask Docker image is *hosted on DockerHub* and ready to be deployed on AWS EC2.

---

*🔹 Step 4: Launch an AWS EC2 Instance*
1️⃣ Log in to *AWS Console* → Go to *EC2*
2️⃣ Click *Launch Instance*
3️⃣ Select an **Amazon Machine Image (AMI)**:
*Ubuntu 22.04 LTS* (Recommended)
*Amazon Linux 2*
4️⃣ Choose *Instance Type* → Select *t2.micro* (Free Tier)
5️⃣ Configure **Security Group**:
Allow *SSH (port 22)*
Allow *HTTP (port 80)*
Allow *Custom TCP Rule (port 5000)* for Flask
6️⃣ Click *Launch* and *download the key pair (`.pem` file)*

---

*🔹 Step 5: Connect to AWS EC2 via SSH*
🔹 *For Mac/Linux Users:*
```bash
chmod 400 your-key.pem
ssh -i your-key.pem ubuntu@your-ec2-public-ip
```

🔹 *For Windows Users (Using PuTTY):*
1️⃣ Convert `.pem` to `.ppk` using *PuTTYgen*
2️⃣ Open **PuTTY**, enter **EC2 Public IP**, and load the `.ppk` key
3️⃣ Click *Open* and log in as `ubuntu` (for Ubuntu) or `ec2-user` (for Amazon Linux)

---

*🔹 Step 6: Install Docker on AWS EC2*
Once connected to EC2, run the following commands:

🔹 *Update system and install Docker:*
```bash
sudo apt update && sudo apt install docker.io -y
```

🔹 *Enable & Start Docker Service:*
```bash
sudo systemctl enable docker
sudo systemctl start docker
```

🔹 *Verify Docker installation:*
```bash
docker --version
```

---

*🔹 Step 7: Pull & Run Flask Docker Image from DockerHub*
1️⃣ Pull your Flask app image from DockerHub:

```bash
docker pull your-dockerhub-username/my-flask-app
```

2️⃣ Run the Flask container on EC2:

```bash
docker run -d -p 5000:5000 your-dockerhub-username/my-flask-app
```

✅ Your Flask app is now running on port *5000* on your AWS EC2 instance.

---

*🔹 Step 8: Access Your Flask App on AWS*
1️⃣ Open your browser and go to:
```plaintext
http://your-ec2-public-ip:5000
```
2️⃣ 🎉 Your Flask app is now live on AWS EC2!

---

*🔹 Optional: Run Flask Container in the Background (Restart on Reboot)*
To keep your container running even after reboot, use:
```bash
docker run -d --restart unless-stopped -p 5000:5000 your-dockerhub-username/my-flask-app
```

*🔹 Hashtags:*
#AWS #Docker #Flask #EC2 #DeployFlask #DockerHub #Python #CloudComputing #DevOps #DockerContainers #AWSDeployment