1.What is Docker – in 2 lines

Ans: A platform for building, running and shipping applications.

2. What is Container – in 3 lines

Ans: A Docker container image is a lightweight, standalone, executable package of software that includes everything needed to run an application: code, runtime, system tools , system libraries and settings.

3. Top 10 commands with 1 example of using docker container

docker create –name=container_name image_name-> create Container
docker start container_name -> start Container
docker stop container_name -> stop Container
docker restart container_name -> restart Container
docker pause container_name -> pause Container
docker kill container_name -> kill Container
docker unpause container_name -> unpause Container
docker rm container_name -> remove Container
docker run -itd –name=container_name image_name -> create start Container
docker rename container_name new_container_name -> rename the container
docker ps -a -> list all the running containers
docker exec -it container_name /bin/bash -> go inside the container
docker inspect container_name -> inspect the container
4. 5 commands with 1 example of using docker image

docker images -> list of images
docker pull image_name -> pull the image from registry
docker rmi image_name -> remove the image
docker save -i image_name.tar image_name -> save the image as tar
docker load -o image_name.tar -> load the image
docker commit -m”message” image_name
5. 5 commands with 1 example of using docker registry

docker login -> login to registery
docker logout -> logout to registery
docker push image_name repositoryName -> push the image to registery
docker tag image_name new_image_name -> rename the image