What is docker command?
What is the command of Docker?
Docker is an open platform for creating, deploying and running applications.
How to use Docker commands?
The Docker command line interface (CLI) provides a series of commands for managing Docker environments and containers. The following are commonly used Docker commands:
- docker run: Create and run a new container.
- docker stop: Stop a running container.
- docker logs: View the container’s logs.
- docker inspect: View the detailed configuration of the container.
- docker ps: List running containers.
- docker pull: Download an image from the Docker repository.
- docker build: Build an image from a Dockerfile.
- docker compose: Use Docker Compose files to manage multi-container applications.
Advantages of Docker commands
- Consistency: Using Docker allows you to run applications in the same way on different systems program.
- Isolation: Containers run in an isolated environment from each other to avoid application conflicts.
- Portability: Docker containers can be easily deployed across platforms.
- Lightweight: Containers contain only the components needed to run the application.
- Quick Deployment: Docker can quickly create and deploy containers, shortening application development and delivery cycles.
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The steps to update a Docker image are as follows: Pull the latest image tag New image Delete the old image for a specific tag (optional) Restart the container (if needed)

How to use Docker Desktop? Docker Desktop is a tool for running Docker containers on local machines. The steps to use include: 1. Install Docker Desktop; 2. Start Docker Desktop; 3. Create Docker image (using Dockerfile); 4. Build Docker image (using docker build); 5. Run Docker container (using docker run).

Four ways to exit Docker container: Use Ctrl D in the container terminal Enter exit command in the container terminal Use docker stop <container_name> Command Use docker kill <container_name> command in the host terminal (force exit)

Methods for copying files to external hosts in Docker: Use the docker cp command: Execute docker cp [Options] <Container Path> <Host Path>. Using data volumes: Create a directory on the host, and use the -v parameter to mount the directory into the container when creating the container to achieve bidirectional file synchronization.

You can query the Docker container name by following the steps: List all containers (docker ps). Filter the container list (using the grep command). Gets the container name (located in the "NAMES" column).

Steps to create a Docker image: Write a Dockerfile that contains the build instructions. Build the image in the terminal, using the docker build command. Tag the image and assign names and tags using the docker tag command.

Docker process viewing method: 1. Docker CLI command: docker ps; 2. Systemd CLI command: systemctl status docker; 3. Docker Compose CLI command: docker-compose ps; 4. Process Explorer (Windows); 5. /proc directory (Linux).

To save the image in Docker, you can use the docker commit command to create a new image, containing the current state of the specified container, syntax: docker commit [Options] Container ID Image name. To save the image to the repository, you can use the docker push command, syntax: docker push image name [: tag]. To import saved images, you can use the docker pull command, syntax: docker pull image name [: tag].
