Pulling from private registries in Docker - Mini Project: Build & Apply

Pulling from Private Docker Registries

📖 Scenario: You work in a team that stores Docker images in a private registry. To use these images on your local machine, you need to log in and pull them securely.

🎯 Goal: Learn how to log in to a private Docker registry and pull an image from it.

📋 What You'll Learn

Use the docker login command with the correct registry URL

Use the docker pull command with the private image name

Understand how to store credentials securely for pulling images

💡 Why This Matters

🌍 Real World

Teams often use private Docker registries to store images that should not be public. Knowing how to log in and pull images is essential for working with these private resources.

💼 Career

DevOps engineers and developers frequently need to authenticate and pull images from private registries to deploy applications securely.

1

Create a variable for the private registry URL

Create a variable called registry_url and set it to "myprivateregistry.com".

Docker

# Your code here

Need a hint?

Use a string variable to store the registry URL exactly as shown.

2

Create a variable for the private image name

Create a variable called image_name and set it to "myprivateregistry.com/myapp:latest".

Docker

registry_url = "myprivateregistry.com"
# Your code here

Need a hint?

Include the registry URL in the image name exactly as shown.

3

Write the Docker login command

Create a variable called login_command that stores the string "docker login myprivateregistry.com".

Docker

registry_url = "myprivateregistry.com"
image_name = "myprivateregistry.com/myapp:latest"
# Your code here

Need a hint?

The login command uses the registry URL exactly as stored in registry_url.

4

Print the Docker pull command

Print the string "docker pull myprivateregistry.com/myapp:latest" using the image_name variable.

Docker

registry_url = "myprivateregistry.com"
image_name = "myprivateregistry.com/myapp:latest"
login_command = "docker login myprivateregistry.com"
# Your code here

Need a hint?

Use an f-string to include the image_name variable inside the print statement.