How to Deploy Docker Using DigitalOcean Marketplace Apps (Step-by-Step Guide)

Prerequisites

• A DigitalOcean account: If you don’t have one, sign up at DigitalOcean’s website. New users often receive free credits to get started.
• Basic knowledge of SSH: You’ll need this to access your droplet after deployment.

Step-by-Step Deployment

Step 1: Log in to Your DigitalOcean Account

Step 2: Navigate to Create Droplet

• Click the green Create button in the top right corner of the dashboard.
• Select Droplets from the dropdown menu.

Step 3: Select the Docker 1-Click App

• Scroll down to the Choose an image section.
• Click the Marketplace tab.
• In the search bar, type “Docker” and press Enter.
• Select the Docker 1-Click App from the search results.

Step 4: Configure Your Droplet

• Choose a plan: For most use cases, the basic plan with 1GB RAM is sufficient. You can scale up later if needed.
• Select a datacenter region: Pick the region closest to you or your target users to minimize latency.
• Add SSH keys (recommended): For secure access, add your SSH key instead of relying on a password. You can upload an existing key or generate a new one.
• Optional settings: Enable backups or monitoring if desired by checking the relevant boxes.

Step 5: Create the Droplet

• Click the Create Droplet button at the bottom of the page.
• DigitalOcean will provision your droplet, which may take a few minutes. You’ll see a progress bar during this time.

Accessing the Droplet

• Locate its IP address on the DigitalOcean dashboard under the Droplets section.
• Open a terminal on your local machine and connect to the droplet using SSH:
  bash

  ssh root@<your_droplet_ip>

  Replace <your_droplet_ip> with the actual IP address of your droplet (e.g., 192.0.2.1).

Verifying Docker Installation

1. Check the Docker version:
   bash

   docker --version

   You should see output like Docker version 20.10.21, build baeda1f (the exact version may vary).
2. Check the Docker Compose version:
   bash

   docker-compose --version

   Expect output like Docker Compose version v2.12.2.

docker run hello-world

Next Steps

• Explore additional resources: In your droplet’s dashboard, click the Get Started panel for guides and information specific to the Docker 1-Click App.
• Learn more about Docker: Check out DigitalOcean’s Docker tutorials for in-depth guidance.
• Use Docker Compose: Since it’s pre-installed, you can manage multi-container applications. Refer to the Docker Compose documentation for examples.
• Deploy your applications: Build your container images using Dockerfiles or pull existing ones from registries like Docker Hub. For example:
  bash

  docker pull nginx
  docker run -d -p 80:80 nginx

  This pulls and runs an NGINX web server.

Additional Configuration (Optional)

• Secure Docker access: If you encounter permission issues, add your user to the Docker group:
  bash

  usermod -aG docker <your_username>

  However, the 1-Click App typically configures this for the root user.
• Enable backups: In the DigitalOcean dashboard, enable backups for your droplet to protect against data loss.
• Customize the droplet: Install additional software or adjust server settings as needed using standard Ubuntu commands.

Conclusion