#!/bin/bash
IMAGE_NAME=$(basename $(pwd))

echo "***"
echo "*** creating an image from Dockerfile.v1 with name my_alpine"

docker build . -f Dockerfile.v1 -t $IMAGE_NAME

echo "***"
echo "***listing all images"
docker image ls

read -n 1 -p "press any key to create an image with the same name from a slightly changed Dockerfile.v2"

docker build . -f Dockerfile.v2 -t $IMAGE_NAME

echo "***"
echo "*** listing all images"
docker image ls

echo "***"
echo "*** note the 'dangling' image named <none>:<none>"
echo "*** to list only dangling images use: docker images --filter dangling=true"
docker images --filter dangling=true