Docker CLI Understanding Exercise

1. Hello World:

   • Run the hello-world image on Docker Terminal. It will pull the hello-world image from the Docker Hub.

     docker run hello-world

2. Running a Container:

   • Pull and run the nginx server. Once the image pulls, it executes and the nginx server starts.

     docker run -d -p 8080:80 nginx

3. Listing Containers:

   • List all the running Docker containers.

     docker ps

4. Stopping a Container:

• Find the container ID you want to stop from the docker ps command then, stop a running Docker container using that ID.

  docker stop container_id

5. Removing Container:

   • Remove a Docker Container. Make sure the container is stopped before trying to remove it.

     docker rm container_id

6. Pulling an Image:

   • Pull the latest Ubuntu image from Docker Hub.

     docker pull ubuntu:latest

7. Listing Images:

   • List all Docker images present on your system.

     docker images

8. Docker Run and Exec:

   • Run an Ubuntu container and execute the bash command to access the Ubuntu bash Terminal.

   docker run -it ubuntu bash

9. Build Docker Image:

   • Create a Dockerfile with an application. Build a Docker image from that Dockerfile.

     bash
     touch Dockerfile
     # Write your application into Dockerfile
     docker build -t myapp .

10. Push Docker Image:

    • Login to DockerHub, tag the image and push your Docker image to Docker Hub. Change username, image_name and image_id with your DockerHub username, desired image name and ID of the created image.

    bash
    docker login 
    docker tag image_id username/image_name
    docker push username/image_name 

By doing these exercises, you will solidify your understanding of the basic commands available in Docker CLI.