Docker basics and commands
I am sure that if you are here, you definitely heard about docker few times at-least. Docker and containerisation are the buzz words of any team these days. So, there are few similar words related do docker. This article will walk you through some terms and I will post some most basic operative commands which are being used.
Docker (Software): Docker is an open-source software designed to facilitate and simplify application development. It is a set of platform-as-a-service products that create isolated virtualisation environments for building, deploying, and testing applications.
Docker (Company): Docker Inc is the company which developed and maintaining docker.
Docker Hub: Docker Hub is the world’s largest library and community for container images
Container: A Docker container is a virtualisation run-time environment where users can isolate applications from the underlying system. These containers are compact, portable units in which you can start up an application quickly and easily
Image: A Docker image is an immutable (unchangeable) file that contains the source code, libraries, dependencies, tools, and other files needed for an application to run
Registry: Container Registry provides storage of Docker container images, enabling fast, scale-able retrieval and network-close deployment of container workloads.
Docker compose: Docker Compose is a file which provides a way to document and configure all of the application’s service dependencies.
Some basic docker commands are:
docker ps //check all the running docker
docker exec -it <container_Name> /bin/bash //get into the running containerdocker exec -it <container_Name> /bin/bash //get into the running container
docker rm <container_id> //remove the container
docker start <container_id> //start a container
docker stop <container_id> //stop contaner
docker ps -a //see all the containers including stopped ones
docker run -d -p <host_port>:<container_port> --name <container_Name> <image_name>:<Image_version/tag> //run a docker image with port and details.
docker image ls //list all the images in the system
docker rmi <image-name> //remove the docker image from the system
docker image pull <image_name>:<image_version/tag> //pull an image from remote system
docker build . //build a docker image (make sure to have Dokcerfile)
docker tag image:latest username/image:demo //tag a built image
