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#!/bin/bash

if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
    set -x
fi
set -eu
set -o pipefail

GUEST_USERNAME=${GUEST_USERNAME:-"ubuntu"}

echo "Installing docker"
export DEBIAN_FRONTEND=noninteractive
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu ${DIB_RELEASE} stable"
apt-get update
apt-get install -y -qq docker-ce >/dev/null

echo "Adding ${GUEST_USERNAME} user to docker group"
usermod -aG docker ${GUEST_USERNAME}