Question:- What is the process for creating a Docker container?
Answer:- We can use any specific Docker image for creating a Docker container using the below command: docker run -t -i command name This command not only creates the container but also starts it for us. If we want to check whether the Docker container has been created or not, then we need to have the following command that will list all the Docker containers, along with the host on which the Docker containers run: docker ps -a
Question:- What is the process for stopping and restarting a Docker container?
Answer:- To stop a Docker container, we need to use the following command: docker stop CONTAINER_ID To restart a Docker container, we need to use the following command: docker restart CONTAINER_ID
Question:- How to create a Docker image?
Answer:- A Docker image can be built using the following command: $ docker build .
Question:- How to stop a Docker container?
Answer:- We can use the following to stop one or more running Docker containers: docker container stop [OPTIONS] CONTAINER [CONTAINER...]
Question:- How to remove Docker images?
Answer:- Use docker images with the -a flag to get the image IDs for removal. Then, pass their IDs or tags to docker rmi: List: docker images -a Remove: docker rmi Image Image
Question:- Where are Docker images stored?
Answer:- It depends on which system the Docker is running and the Docker storage driver is being used. For example, on Windows, Docker images are stored by default in: C:ProgramDataDockerDesktop On a Mac, Docker images are stored by default in: ~/Library/Containers/com.docker.docker/Data/vms/0/
Question:- How to run a Docker image?
Answer:- he ‘docker run’ command runs an image inside the container. It will require the image name. docker run [docker_image]
Question:- How to start a Docker container?
Answer:- The following command starts a Docker container: docker container start [OPTIONS] CONTAINER [CONTAINER...]
Question:- How to use Docker Compose?
Answer:- Docker Compose typically includes a three-step process: 1. Using a dockerfile to define the app’s environment to facilitate reproduction anywhere 2. Defining the app services in docker-compose.yml so that they can run in an isolated environment together 3. Running docker-compose up
Question:- What command should be run to view all the running Docker containers?
Answer:- To view all the running containers in Docker, we can use the following: $ docker ps
Question:- What is Docker daemon?
Answer:- Docker daemon is a service that manages Docker containers, images, storage volumes, and the network. It constantly listens to Docker API requests and processes them. A daemon can communicate with other daemons as well for the management of Docker services.
Question:- Name and explain the states of a Docker container.
Answer:- • Created: We see this Docker container state when a container is newly created. • Restarting: When the Docker container is restarted due to any issues, this state is observed. • Running: It is the main state for the container after it has started. • Paused: When a running Docker container is temporarily stopped via docker pause, this is the status that we will see. • Exited: If a container has stopped due to some issue or stopped manually, this will be the state of the container. • Dead: When the daemon has tried but failed to stop a container (mostly because of a busy device or resource), this state will be seen.
Question:- What is Docker Hub?
Answer:- Docker Hub helps with linking to code repositories. This cloud-based registry enables the building, testing, and storing of images in Docker Cloud. Images can also be deployed to the host with it.
Question:- Define Virtualization.
Answer:- Virtualization is the process of logically dividing mainframes to enable more than one application to run at a time.