Detailed explanation of Docker basics and common commands.

Docker is a popular containerization technology that can be used to package, distribute and run applications. It provides developers with a convenient way to deploy, with isolation and portability. The following is a detailed explanation of some basic concepts and commonly used commands of Docker:

Basic concepts:

1. Image: Docker image is a read-only template used to create Docker containers. It contains all the files, dependencies, and configuration information needed to run the application.
2. Container: Docker container is a running instance created based on Docker image. Containers are executable and can be started, stopped, deleted, and can communicate with other containers or the host.
3. Repository: Docker repository is a place used to store and share Docker images. It can be a public repository, such as Docker Hub, or a private repository.

Common commands:

1. Mirror related commands:

   • docker images: List all local Docker images.
   • docker pull <image name></image>: Download the specified Docker image from the warehouse.
   • docker build -t <image name> <dockerfile path></dockerfile></image>: Build the image based on the Dockerfile.
   • docker rmi <image name></image>: Delete the specified Docker image.

2. Container related commands:

   • docker ps: List running containers.
   • docker run <image name></image>: Create and start a new container.
   • docker start <container id or name></container>: Start the created container.
   • docker stop <container id or name></container>: Stop a running container.
   • docker rm <container id or name></container>: Delete the specified container.

3. Warehouse related commands:

   • docker search <keywords></keywords>: Search for images on Docker Hub.
   • docker push <image name></image>: Push the image to the specified warehouse.
   • docker pull <warehouse name>/<image name></image></warehouse>: Download the image from the specified warehouse.

4. Other commonly used commands:

   • docker exec -it <container id or name> <command></command></container>: Execute the command in the running container.
   • docker logs <container id or name></container>: View the logs of the container.
   • docker inspect <container id or name></container>: Get detailed information about the container.
   • docker-compose up: Use Docker Compose to start the application.

This content only briefly introduces some basic and common commands of Docker. In fact, Docker has many more functions and options waiting for you to explore. If you want to learn more in-depth information, it is recommended to consult the official Docker documentation. With practice and manipulation, you'll get better at Docker and improve your skill level.

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