docker-beginner

docker pull centos:7

- List locally, installed images
docker images

- Show all images, including itermmediate
docker images -a
- Run a linux command inside a docker container:
docker run --rm centos:7 echo "hello world"

- run a shell inside a docker container:
docker run -it --rm centos:7 bash

- run several cmd
hostname -f
  cat /etc/hosts
  ps aux
  yum -y install vim
  ip a
  
  - case
  rm -fr /usr/sbin
  rm -fr /usr/bin
  ls
  exit
  - solution to recover
  docker run -it --rm centos:7 bash
  
  - run with delete container after stop (-rm)
  docker run --rm -p 8888:8080 tomcat:8.0
  
  - from browser
  http://localhost:8888
  
  - troubleshoot
  docker ps
  
  - login to run container using container id
  docker exec -it <container_id> bash
  
  - Nor should we have any stopped containers:
  docker ps -a
  
  - running tomcat with name "tomcat8"
  docker run -d --name="tomcat8" -p 8888:8080 tomcat:8.0
  
  - view log tomcat8
  docker logs tomcat8
  
  - run as daemon
  docker top tomcat8
  
  - inspect container https://docs.docker.com/reference/commandline/inspect/
  docker inspect tomcat8
  
  - stop tomcat8
  docker stop tomcat8
  
  - remove tomcat8
  docker rm tomcat8
  
  - docker machine run lab
  docker-machine run lab
  
  - stop docker service
  docker stop $(docker ps -a -q)
  docker rm $(docker ps -a -q)

# Delete all images
  docker rmi $(docker images -q)