Restarting containers in Docker - Mini Project: Build & Apply

Restarting containers

📖 Scenario: You are managing a small web application running inside a Docker container. Sometimes the container needs to be restarted to apply updates or fix issues.

🎯 Goal: You will learn how to list running containers, identify a container by name, and restart it using Docker commands.

📋 What You'll Learn

List all running Docker containers

Identify a container by its name

Restart a specific Docker container by name

💡 Why This Matters

🌍 Real World

Restarting containers is a common task when updating applications or fixing issues without stopping the entire system.

💼 Career

DevOps engineers and system administrators often restart containers to deploy updates or recover from errors quickly.

1

List running Docker containers

Run the command docker ps to list all currently running Docker containers.

Docker

# Run the command to list running containers
# Your code here

Need a hint?

Use the docker ps command to see running containers.

2

Identify the container by name

Use the command docker ps --filter "name=webapp" to list running containers with the exact name webapp.

Docker

docker ps
# Use docker ps with a filter to find the container named 'webapp'
# Your code here

Need a hint?

Use the --filter "name=webapp" option to find the container named webapp.

3

Restart the container named 'webapp'

Run the command docker restart webapp to restart the container named webapp.

Docker

docker ps

docker ps --filter "name=webapp"
# Restart the container named 'webapp'
# Your code here

Need a hint?

Use docker restart webapp to restart the container.

4

Verify the container restarted

Run docker ps again to confirm the container webapp is running after the restart.

Docker

docker ps

docker ps --filter "name=webapp"

docker restart webapp
# Verify the container is running after restart
# Your code here

Need a hint?

Run docker ps to see running containers and confirm webapp is listed.