docker: refactor folder (#98)

docker/hands-on/python-sample/Dockerfile

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+FROM python:3.8
+WORKDIR /
+COPY requirements.txt .
+# RUN pip install -r requirements.txt
+COPY . .
+CMD [ "python", "random.py" ]

docker/hands-on/python-sample/README.md

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+[Link to practice script](practice.sh)

docker/hands-on/python-sample/basic.py

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+print("Hello")

docker/hands-on/python-sample/practice.sh

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+#!/bin/bash
+
+# Running python script without building docker image
+echo "Running python script without building docker image"
+docker run --rm -v $(pwd):/app -w /app python:3.9-slim-buster python basic.py
+echo $?
+# Build and run docker container
+echo "Build and run docker container"
+IMAGE_NAME="random_python:latest"
+docker build -t $IMAGE_NAME .
+docker run --rm $IMAGE_NAME

docker/hands-on/python-sample/random.py

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+import datetime
+now = datetime.datetime.now()
+print ("Current date and time : ")
+print (now.strftime("%Y-%m-%d %H:%M:%S"))

docker/hands-on/python-sample/requirements.txt

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+random