Basics of Docker- components, client server architecture & some basic commands

Docker- Set of PAAS products which uses OS level virtualisation, consumes OS resources as per the requirements & makes it easier to create, deploy, and run applications.
Some basic components:-
Image- it includes all the dependencies plus deployment and execution configuration to be used by a container runtime.
Container- Run time repersentation of docker image, while scaling up a particular service, more contaianers can be created for same image.
Repository- Collection of related Docker images, labeled with a tag that indicates the image version.
Registery- Service that provides access to repositories. The default registry for most public images is Docker Hub.

Docker Client-server architecture:-
Docker client- end user facing interface to send instructions to Docker.
Docker Daemon- Responds to the clients requests, manages images and containers & interacts with registery.

Docker desktop- Docker Desktop includes the Docker daemon, the Docker client & a few more docker components.
link to install docker-
Windows- https://docs.docker.com/desktop/install/windows-install/
linux-https://docs.docker.com/desktop/install/linux-install/
mac-https://docs.docker.com/desktop/install/mac-install/

Some basic commands:-
pull Pull an image from dockerhub
images List all the local images
run Runs the image on container, if image is not found will automatically pull from registry. -d-detached mode
ps List the running containers, --all option for listing all containers
stop Gracefully stops the running container
start Starts the containers which have been stopped
kill Forcefully stops the running container
build Build an image from a docker file
rename Renames existing containers even if they are in running mode
tag Rename image
top Display running processes of a container
logs Fetches the logs of a contaianer
exec Run a command within running container
login Log in to dockerhub
push Push an image to dockerhub
rm To rmmeove a contaianer -f to remove a running contaianer
rmi To remove the image
docker command_name --help