In this section, we will cover the fundamental Docker commands that you need to get started with Docker. These commands will help you manage Docker images, containers, and other Docker resources. By the end of this section, you should be comfortable with the basic operations in Docker.

1. Docker CLI: The Docker Command Line Interface (CLI) is the primary way to interact with Docker. It allows you to manage images, containers, networks, and volumes.
2. Images: Read-only templates used to create containers.
3. Containers: Instances of Docker images that run applications.
4. Docker Daemon: The background service that manages Docker objects.

Here is a list of basic Docker commands that we will cover:

1. docker --version
2. docker info
3. docker pull
4. docker images
5. docker run
6. docker ps
7. docker stop
8. docker rm
9. docker rmi

This command displays the installed Docker version.

Output:

This command provides detailed information about the Docker installation, including the number of containers, images, and the storage driver.

Output:

This command downloads a Docker image from a repository (usually Docker Hub).

Output:

This command lists all the Docker images available on your local machine.

Output:

This command creates and starts a new container from a specified image.

Output:

This command lists all running containers.

Output:

To list all containers (running and stopped), use:

Output:

This command stops a running container.

Example:

This command removes a stopped container.

Example:

This command removes a Docker image.

Example:

1. Check Docker Version: Run the command to check your Docker version.
2. Pull an Image: Pull the nginx image from Docker Hub.
3. List Images: List all Docker images on your local machine.
4. Run a Container: Run a container using the nginx image.
5. List Running Containers: List all running containers.
6. Stop the Container: Stop the running nginx container.
7. Remove the Container: Remove the stopped nginx container.
8. Remove the Image: Remove the nginx image from your local machine.

1. Check Docker Version:

   docker --version
   

2. Pull an Image:

   docker pull nginx
   

3. List Images:

   docker images
   

4. Run a Container:

   docker run -d -p 80:80 nginx
   

5. List Running Containers:

   docker ps
   

6. Stop the Container:

   docker stop <container_id>
   

7. Remove the Container:

   docker rm <container_id>
   

8. Remove the Image:

   docker rmi nginx
   

• Forgetting to Stop Containers: Always stop a container before removing it.
• Using Incorrect IDs: Ensure you use the correct container or image ID.
• Network Ports: When running a container, ensure the ports are not already in use.

In this section, we covered the basic Docker commands that are essential for managing Docker images and containers. These commands form the foundation of working with Docker, and mastering them will make it easier to understand more advanced concepts. In the next section, we will dive deeper into understanding Docker images.