Docker Exercise 2

Docker Exercise 2 - Interactivity

Connect to an internal shell

docker run -it node

Preparation

Copy the following files into a local directory on your system.

rng.py

from random import randint
 
min_number = int(input('Please enter the min number: '))
max_number = int(input('Please enter the max number: '))
 
if (max_number < min_number): 
  print('Invalid input - shutting down...')
else:
  rnd_number = randint(min_number, max_number)
  print(rnd_number)

Dockerfile

FROM python
 
WORKDIR /app
 
COPY . /app
 
CMD ["python", "rng.py"]

Build the image

docker build -t python_random .

Run a container

docker run -it python_random