docker stop `docker ps -a -q`
docker rm `docker ps -a -q`
docker rmi `docker images -q`
docker search jenkins
docker pull jenkins
docker run -d -p 8080:8080 --name jk jenkins
docker exec -it jk /bin/bash
docker /var/jenkins_home/secrets/initialAdminPassword
or
docker exec -it jk cat /var/jenkins_home/secrets/initialAdminPassword
or
docker logs jk