My experience of learning docker. I have listed all the commands which I encountered and are useful in real life while using docker, other commands can be accesed using docker --help.

1. Download docker setup on your OS.

2. Setup you account on dockerhub .

3. Pull your first image from dockerhub.

  $ docker run alpine

4. For checking the details of images

  $ docker images

5. List of all the running containers

  $ docker ps -a

6. To stop alpine

  $ docker stop alpine

7. To create an container

  $ docker create alpine 

8. To remove a container

  $ docker kill alpine

9. To remove an image

  $ docker rmi <image_name>

10. To force remove an image

  $ docker rmi -f <image_name>

Make a dockerfile in your repository for which you want to make the image. Open the docker file and write following into it :

FROM python:3.6

MIANTAINER Innovative Coder

EXPOSE 8000

#install dependencies
COPY requirements.txt requirements.txt

RUN pip install -r requirements.txt

#Run the code

CMD ["python3 <filename>"]

instead of filename write the name of file you want to compile above code can be edited on the basis of the language chosen

And then build the image using

  $ docker build docker_

lets say name of the folder be docker_

 $ docker pull jcdemo/flaskapp

Official documentation : https://docs.docker.com/compose/reference/

Feel free to contribute!!