Docker Basic Operations Part 2

In the previous blog, we completed the Installation process of Docker on Windows & Ubuntu machines. Also, we understood some basic commands of Docker and how to deploy a container in Docker.

You can refer to the blog here - Docker Installation & Basic Operations

In this blog, we will learn more commands in Docker and a small demo of deploying a container in Docker.

Commands in Docker

• To verify the status of your Docker Engine

    sudo systemctl status docker
  

  

• To create an image from the docker file

    docker build -t "<image_name>" .
  

  "-t" is the tag name flag.

• To build a container from the image

    docker run -itd --name "<name_of_conatiner>" -p "host_port:container_port" "<image_name>"
  

  "-it" flag stands for interactive mode. It tells docker to run the container in the interactive mode.

  "-d" flag stands for "detached" mode. It tells docker to run the container in the background, detached from your terminal.

  "-p" flag is used to specify port mapping, allowing you to map ports from your host system to ports within the Docker container.

Deploying a container in Docker

Let's deploy an HTML page in a docker container using a Python Server.

Step 1: Check the status of your docker. It should be active and in a running state as shown in the above image.

Step 2: Write a simple HTML file and a Dockerfile as shown in the below images.

Step 4 - Open the terminal in the same directory where your HTML file and Docker file are stored and build the Docker Image as shown below.

Step 5 - To check the image you can write "docker images". Our Docker Images have been successfully created. Create a container from the image by entering the below command.

Make sure you enter the correct port of the container which you have exposed earlier in the Dockerfile.

docker run -itd --name "<name_of_conatiner>" -p 8080:8888 practiceimage

Our container has been successfully deployed, check using the "docker ps" command.

Step 6 - Now type the localhost URL (http://localhost:8080/) in your web browser and you will see the result.

This is how we can build an image and then run a container using Docker.

Now remove the image and container. First, stop the container using the "docker stop <container_id>" command and then remove it using "docker rm <container_id>".

Remove the image using the "docker rmi <image_id>" command.

So that's a wrap-up for this blog.

Try to create more containers using docker and understand its process.

Stay tuned for my next blog. Happy Learning !! 🚀