Configuration method for containerized development on Linux system through Docker

Configuration method for containerized development on Linux systems through Docker

With the rapid development of new technologies such as cloud computing, big data, and microservices, containerized development has gradually become the mainstream method of modern software development. . As a leader in container development, Docker is widely used in various industries. This article will introduce how to configure Docker on a Linux system for containerized development, and detail the specific steps through code examples.

Step 1: Install Docker

First, we need to install Docker. On Linux systems, you can install it with the following command:

sudo apt-get update
sudo apt-get install docker-ce

Step 2: Start the Docker service

After the installation is complete, we need to start the Docker service. Execute the following command:

sudo service docker start

Step 3: Verify the installation result

After the installation is completed, we can verify whether Docker is installed correctly and started successfully through the following command:

docker version

If it is displayed If the version information of Docker is displayed, the installation is successful.

Step 4: Pull the image

Before container development, we need to pull the corresponding image. The image is the basis of the Docker container and can be understood as the template of the container. Docker Hub is a public image repository where we can find a variety of commonly used images. Taking Ubuntu as an example, we can pull the Ubuntu image through the following command:

docker pull ubuntu

Step 5: Create and start the container

After completing the image pulling, we can create a new one through the following command Container and start:

docker run -it --name mycontainer ubuntu /bin/bash

Among them, mycontainer is the name we gave the container, ubuntu is the name of the image we pulled, /bin/ bash is the command executed after the container is started (that is, the terminal in the container).

Step 6: Develop in the container

After the container is created, we can develop in the container. The container is isolated from the host, so various development tools, dependent libraries, etc. can be installed in the container without affecting the host environment. We can enter the container's terminal through the following command:

docker exec -it mycontainer /bin/bash

where mycontainer is the name we took when we created the container before.

Step 7: Save container state

During the development process, we may need to save the state of the container to quickly restore to the previous state next time. We can save the container as an image through the following command:

docker commit mycontainer myimage

Among them, mycontainer is the name we took when we created the container before, and myimage is the name we took for the image. name.

Step 8: Export and import the image

If you need to export the image to other machines, we can use the following command to export the image:

docker save -o myimage.tar myimage

Among them, myimage is the name we gave the image before. The exported image will be saved as a myimage.tar file.

When importing images on other machines, we can use the following command:

docker load -i myimage.tar

Among them, myimage.tar is the image file we exported before.

Through the above steps, we can successfully configure Docker and perform container development on the Linux system. Docker's flexibility and powerful performance make container development more efficient and convenient. Moreover, through Docker's image management function, we can easily share and deploy containers, further improving development efficiency.

I hope the content of this article can help everyone better understand and apply Docker for container development.

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