1. create a folder in your local computer.

2. create a file named Dockerfile into the folder

3. content of the Dockerfile:

FROM python:3
ADD hello1.py /
EXPOSE 3334
CMD [ "python", "./hello1.py"]

4. create hello1.py in same folder, containing:

print("Hello1")

5. install Docker desktop for Windows10 from https://www.docker.com/products/docker-desktop, it will require WSL for Windows

6. Open terminal

7. to create docker image named hello2, run:

docker build -t hello2 .

8.to run the image:

docker run -p 3334:3334 hello2

9. you should see output as

Hello1

10. to share your Hello2 image with others:

10a. go to hub.docker.com

10b. create a free account with an ID  and create a repository (mine is test), The repository name will be required in the step 10g

10c. open the terminal in the folder location you created in step 1

10d. run the command:

docker login --username=yourhubusername

just with your own user name and email that you used for the account. Enter your password when prompted. If everything worked you will get a message similar to:

Login Succeeded

10e. run the command:

docker images

10f. you will see all the images including Hello2

10g. tag your image, run:

docker tag hello2 YOUR-DOCKERHUBID/REPOSITORY-NAME:hello2

10h. push it to dockerhub, run:

docker push YOUR-DOCKERHUBID/REPOSITORY-NAME:hello2

Login to hub.docker.com and you should see your image there.