How to run a docker image

How to run a Docker image? Pull the required image: docker pull Run container: docker run Connect to container: docker exec -it /bin/bash Stop container: docker stop Delete container: docker rm

How to run a Docker image

A Docker image is a portable executable package that contains the required file systems and dependencies to run a specific application or service. Here is how to run a Docker image:

1. Pull the mirror

First, you need to pull the desired image. You can use the following command:

 <code>docker pull </code>

For example, to pull a latest version of Ubuntu image:

 <code>docker pull ubuntu</code>

2. Run the container

After pulling the image, you can run the image using the following command:

 <code>docker run  </code>

Options include:

• -p : Port mapping (map container port to host port)
• -v : Volume Mount (mount the host directory into the container)
• -t : Assign pseudo-terminals to containers (standard input)
• -i : Keep containers interactive (standard input available)

For example, to start an Ubuntu container in interactive mode and map port 80 to host port 8080:

 <code>docker run -it -p 8080:80 ubuntu</code>

3. Connect to the container

After the container is started, you can connect to its shell using the following command:

 <code>docker exec -it  /bin/bash</code>

This will open a command prompt that allows you to interact with the container.

4. Stop the container

To stop a running container, you can use the following command:

 <code>docker stop </code>

5. Delete the container

To delete a container, you can use the following command:

 <code>docker rm </code>

Example

Here is an example of running an Nginx container and exposing it on host port 80:

 <code>docker run -d -p 80:80 nginx</code>

This pulls the Nginx image, starts a container, and maps container port 80 to host port 80.

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