docker is container tool and container has images and applications.

docker hub, docker store and docker registry are three docker repositories

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DockerImage = it contains pre-written code

Docker hud, Docker store and Docker Repository are the three repositories in Docker

when we create docker .docker file will be created in user home directory(/root)

Detachedmode = we run docker in the background by the using command docker run -itd <imagename>

i=interactive, t=terminal, d=detached

docker ps ----> to display running containers

docker ps -a ----> to display all containers

docker attach <container id> ----> to start docker conatiner

cntrl+P+Q ----> to exit from container

docker login -----> to login into docker hub

docker search <image name> ---> to search images in docker hub

docker stop <container id> ----> to stop container

docker build -t <imagename> <filelocation> ----->to build docker image

docker tag <imageid> new imagename ---> to change docker image name

docker push <imagename> ----> to push docker image to the docker hub

docker run -itd -v /opt/prasad:/opt/prasad ubuntu ---> to move images from one container to another

docker inspect <container id> -----> to image details

Rootusermode = we run docker in the root only by using command docker run -it <imagename>

#docker images ------> to show docker images

#docker pull <imagename> -------> to pull docker image

#docker rm <containerid> ------> to remove conntainer

#docker rmi <imagename> ------> to remove image

#docker stop <container id> ------> to stop container

#FROM centos:latest ----> to create centos docker file

#MAINTAINER dhana <mailid> ------> maintainer of the file

#RUN apt-get update -y ------> the command that we want to run on the docker file

#docker build -t <nameof the file> path of the file

#docker tag <imageid> <newimagename> ----------> to rename docker image