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#!/usr/bin/env bash
# vim: set filetype=sh
#
# Author: Cody Hiar
# Date: 2019-01-15
#
# Description: Show how quickly a docker container
# can boot up, run a command, and then boot down.
#
# Set options:
# e: Stop script if command fails
# u: Stop script if unset variable is referenced
# x: Debug, print commands as they are executed
# o pipefail: If any command in a pipeline fails it all fails
#
set -exuo pipefail
# Run a container
# Time the docker command tells us how long it took
# --rm will remove the container after it's done executing
# -it is for running the docker process interactively in our
# current terminal vs running it as a daemon.
# ubuntu:18.04 is the image we want to use, if we don't have
# the image downloaded then docker will automatically try
# to get it from docker hub
# The remainder is the command we're passing to the container
time docker run --rm -it ubuntu:18.04 /bin/bash -c 'echo Hello World'
# Show size of docker container
docker images | grep '18.04'
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