How to keep developing a web application on EC2 pushed from VS Code to Dockerhub and then Dockerhub to EC2

[Splendid Digital Solutions]

How to keep developing a web application on EC2 pushed from VS Code to Dockerhub and then Dockerhub to EC2
byu/DigitalSplendid inwebdev

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byu/DigitalSplendid from discussion
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Gemini:

You’re right, constantly pushing to DockerHub and then EC2 for every code change isn’t the most efficient workflow. Here’s a better approach to keep developing your web application:

Setting Up a Local Development Environment:

1. Clone Your Code: If you haven’t already, clone your existing codebase from your CS50x project on Edx to your local machine using Git. This allows you to make changes and test them locally before deploying to production.
2. Docker Compose (Optional): Consider using Docker Compose. This tool simplifies running multi-container applications (if your application has separate services). It defines the services and their configurations in a single docker-compose.yml file.
3. Build Locally: Use docker-compose build (or docker build if no Compose) to build the Docker image containing your application code on your local machine. This ensures everything works before deploying.

Development Workflow:

1. Make Code Changes: Edit your application code within VS Code. Version control with Git is highly recommended to track changes and revert if needed.
2. Test Locally: Run the application locally using docker-compose up (or docker run) to test your changes in a simulated environment. This helps identify and fix any issues before deployment.
3. Rebuild and Push (When Ready): Once satisfied, rebuild the Docker image with docker-compose build (or docker build). Then, push the updated image to DockerHub using docker-compose push (or docker push).

Deployment Options:

Here are two common approaches for deploying the updated image to your EC2 instance:

• Manual Deployment:
  • SSH into your EC2 instance.
  • Pull the latest image from DockerHub using docker pull.
  • Restart your application container to pick up the changes. (This might involve commands specific to your application’s setup)
• CI/CD Pipeline (Recommended):
  • Consider setting up a CI/CD pipeline. This automates the process. When you push code changes to your version control system (e.g., Git), the pipeline triggers actions like building the image, pushing it to DockerHub, and deploying it to your EC2 instance (using tools like AWS CodeDeploy).

This workflow streamlines development by allowing you to work locally, test changes, and deploy only when ready. It also reduces the manual work involved in updating the application on your EC2 instance.

Additional Resources:

• Docker Compose tutorial: https://docs.docker.com/compose/gettingstarted/
• AWS CodeDeploy: https://docs.aws.amazon.com/codedeploy/latest/userguide/welcome.html

Remember to choose the deployment method (manual or CI/CD) that best suits your needs and technical expertise. There are plenty of online resources available for further learning!

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