dockername

#!/bin/sh

set -u
set -e

DOCKERUSER=$(docker info 2>&1 | grep -e '^ Username: ' | sed -e 's/ Username: \(.*\)/\1/')
if [ "$DOCKERUSER" = "" ]; then
	# Refer to
	# https://stackoverflow.com/questions/29326721/is-there-a-way-to-get-the-docker-hub-username-of-the-current-user
	DOCKERUSER=$(docker-credential-$(jq -r .credsStore ~/.docker/config.json) list | \
		jq -r '. | to_entries[] | select(.key | contains("docker.io")) | last(.value)')
	if [ "$DOCKERUSER" = "" ]; then
		echo "Could not obtain Docker username.  Run 'docker login' and try again."
		exit 1
	fi
fi

DIR=`dirname $0`
pushd $DIR >/dev/null 2>&1
DOCKERIMAGE=`git branch 2>/dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/' -e 's/-/:/g'`
popd >/dev/null 2>&1
if [ "$DOCKERIMAGE" = "" ]; then
	echo Could not obtain Docker image name.
	exit 1
fi