Docker_Commands.txt

Reference Link: https://www.tutorialspoint.com/docker/index.htm

docker version
docker info
docker images
docker pull <imageName>
docker run <imageName>
docker run -it <imageName>    --> running image on interactive terminal Mode
docker run -d <imageName>     --> detached mode of running container
docker ps                     --> containers which are running
docker ps -a                  --> all containers started and exited
docker ps -aq                 --> all container IDs
docker rm <containerID> (or)  --> removing one container by ID 
docker rm $(docker ps -aq)    --> deleting all container by IDs
docker rmi -f <imageID >      --> forced removal of one image
docker rmi -f $(docker images -aq) --> remove all the images exist in the system.

All the dangling images with no tags can be viewes through below command
 docker images --filter "dangling=true"


docker stop <containerID>
docker start <containerID>
docker kill <containerID>
docker run -d -p 15672:15672 --hostname my-rabbitmq --name messageQ rabbitmq:3-management
docker run -p 8080:8080 -v /var/jenkins_home/:/var/jenkins_home/  -d jenkins
 
Starting and stoping docker engine service from OS:
service docker stop  (To check whether the service is running fire a cmd: docker info)
service docker start (To check whether the service is running fire a cmd: docker info)

DockerFile:  --> Set of instruction to build a Image
FROM, MAINTAINER, RUN, ADD,COPY,ENTRYPOINT,CMD,HEALTH...

docker build -t <imgName:TagName> dir   (.)         ---> It will build a image based on Dockerfile instruction in current directory.

Tag the image to align to Docker Hub repository:
docker tag <currentRepoName> <expectedRepoName>     --> eg: docker tag nginx:1.0 manee2k6/nginx:1.0

Below URL helps to configure withDockerRegistry and servers:
https://jenkins.io/doc/pipeline/steps/docker-workflow/

docker login    --> Provider username and Password
docker push <repoNameWithTag>                       --> eg: docker push manee2k6/nginx:1.0

docker inspect <imageID>                            --> To inspect the configuration of Images created..
docker inspect <repoName:tagName>                   --> To inspect the configuration of Repository.

Volume mounting uisng -v:
 docker run -p 8081:8080 -p 50000:50000 -v /var/jenkins_home:/var/jenkins_home -v /var/run/docker.sock:/var/run/docker.sock --name         jenkins -d jenkins-docker
 
 Above docker run command can be executed using Docker-compose file as below:
  Ref Link: https://github.com/istresearch/jenkins/blob/master/docker-compose.yml
  1. Create a file called as "docker-compose.yml"
  2. Copy the code below on the above file.
     version: '2'
     services:
       jenkins:
         image: jenkins-docker:latest
         container_name: jenkins
         user: jenkins
        volumes:
          - /var/jenkins_home:/var/jenkins_home
          - /var/run/docker.sock:/var/run/docker.sock
         environment:
           JENKINS_HOST_HOME: "/var/jenkins_home"
         ports:
           - "4000:8080"
           - "50000:50000"