- Download Install Docker desktop
Go to terminal and run
docker info
docker images
docker ps -a
Exit or control D
- Docker runs an Image and make it a container. HOW? Follow below:
To run an image in container:
Docker run -ti ubuntu:latest bash
- To Create an Image from a container. This will save all your files inside the container.
Docker commit <containerID>
Gives image number
- To create a tag:
Docker tag <Image number> my-image
- To run my-image:
Docker run -it my-image bash
- To create new image from your container:
Docker commit <container NAME> my-image-2
- To Detach and attach a container:
Docker run -d -it Ubuntu bash
Docker attach <container name>
Control P , Control Q — will exit /detach you from container but container is running.
Docker exec -it <container name>
- Docker logs:
docker run -d –name example ubuntu bash -c “lose /etc/password”
2d974118fdd1bfb0dac9c5e3079f60b46099b8cc2a78672c75b83a0d29bbe19f
docker logs example
bash: lose: command not found
- Stop container and remove:
Docker kill <container name/id>
Docker rm
- Docker resource utilization:
Docker run –memory 5mb my-image
Docker run –cpu-shares 50 my-image
Docker run –cpu-quota 1000 my-image
1000 ms
- Publish port dynamically:
Docker run -rm -it -p 45678 -p 45679 –name echo-server Ubuntu bash
root@: nc -lp 45678 | nc -lp 45679
Docker port echo-server
45678/tcp -> 0.0.0.0:32777
45679/tcp -> 0.0.0.0:32779
Nc localhost 32777
Nc localhost 32779
- Network:
Docker network ls
- Docker network create learning
Docker run –rm –it –net learning –name catserver ubuntu bash
root@: ping catserver
Ping dogserver
Docker run –rm –it –net learning –name dogserver ubuntu bash
root@: ping catserver
On dogserver:
Nc -lp 1234
On catserver:
Nc dogserver 1234
Both can communicate together now.
- List Images:
Docker images
- Tags:
Docker commit <container name> my-image:v2.1
Docker pull
docker push
Docker rim image-name:Tag
- Volumes:
Docker run -it -v /apatel/myfolder:/shared-folder Ubuntu bash
- DockerFile:
Create docker file named Dockerfile
FROM Ubuntu
WORKDIR /install/
USER gag
RUN apt-get -y update
RUN apt-get install nano
RUN unzip install.zip /opt/install
RUN echo “Hello Docker”
ADD run.sh /run.sh
ADD project.tar.gz /install
ADD https://down.download.rpm /project/
ENV DB_HOST=db.prod.ex.com
ENV DB_PORT 5123
EXPOSE 8080
VOLUME [“/host/path”, “/container/path”]
CMD [“/bin/nano”, “/tmp/myfile”]
To create new image:
Docker build -t tagname .
Docker run –rm -ti tagname
Docker uses bridge to connect this containers and share data between them.
Docker run -ti –rm –net=host –privileged=true Ubuntu bash
Apt-get install iptables
Iptables -n -L -t not
Docker inspect –format ‘{{.State.Pid}}’ <container name>
- COW:> Copy on Write
Docker save -o images.tar.gz Ubuntu:14.0 busybox
Docker load -I images.tar.gz
Arpita Patel 