Clean wordpress/entrypoint.sh and add pre-start-update

WP_ROOT=${WORDPRESS_ROOT:-/var/www/html}

WP_CONTENT=${WP_ROOT}/wp-content

WP_CONFIG=${WP_ROOT}/wp-config.php

die() { echo "$*" >&2; exit 1; }

MYSQL_CONF=/etc/wordpress/mysql.conf

genkey() { head -c1M /dev/urandom | sha1sum | cut -d' ' -f1; }

create_config()

{

source ${MYSQL_CONF}

cat > $WP_CONFIG <<END_CONFIG

<?php

/**

	# ----------------

	# Setup the database, install the scripts & make a config

	source /etc/wordpress/mysql.conf

	if [ -e ${MYSQL_CONF} ]; then

		source ${MYSQL_CONF}

	fi

	# parse command line arguments

	SHIFT=shift

				continue

				;;

			-h|--host) exec DB_HOST=$POP ;;

			-d|--database) exec DB_NAME=$POP ;;

			-u|--user) exec DB_USER=$POP ;;

			-p|--password) exec DB_PASSWORD=$POP ;;

			-c|--clear) unset DB_HOST DB_NAME DB_USER DB_PASSWORD ;;

			-h|--host) eval ARG_HOST=$POP ;;

			-d|--database) eval ARG_NAME=$POP ;;

			-u|--user) eval ARG_USER=$POP ;;

			-p|--password) eval ARG_PASSWORD=$POP ;;

		esac

		$SHIFT

	done

	# command line argument defaults

	: ${DB_HOST:=mysql}

	: ${DB_USER:="${DB_NAME?A database name is required}_user"}

	: ${DB_PASSWORD:=}

	create_config

	: ${ARG_HOST:=${DB_HOST:-mysql}}

	: ${ARG_NAME:=${DB_NAME?A database name is required}}

	: ${ARG_USER:=${DB_USER:-${ARG_NAME}_user}}

	: ${ARG_PASSWORD:=${DB_PASSWORD:-}}

	cat >${MYSQL_CONF} <<-END

		DB_HOST=${ARG_HOST}

		DB_NAME=${ARG_NAME}

		DB_USER=${ARG_USER}

		DB_PASSWORD=${ARG_PASSWORD}

	END

}

run_install()

{

	# overwrite current source onto deployed scripts

	rm -r /usr/src/wordpress/wp-content/

	cp -r /usr/src/wordpress/* ${WP_ROOT}/

	mkdir -p ${WP_CONTENT}

	# prevent core scripts from being overwritten by the application.

	chown -R root:root ${WP_ROOT}/

	# allow themes, plugins & content to be installed/managed by the application

	chown -R www-data:www-data ${WP_CONTENT}

}

run_cmd()

{

	# main entrypoint

	# ---------------

	# Run the given command after sanity checks

	# install/upgrade to volume from image source

	run_install

	# run setup entrypoint if it has not been run on this container before

	test -e $WP_CONFIG || run_setup

	# exec the command

	exec "$@"

update_all() {

	wp core update --minor

	wp plugin update --all

	wp theme update --all

	wp language core update

	wp language plugin update --all

	wp language theme update --all

}

case "$1" in

	setup) run_install && shift && run_setup "$@" ;;

	*) run_cmd "$@" ;;

	setup)

		shift

		run_setup "$@"

		;;

	php-fpm)

		create_config

		update_all

		exec "$@"

		;;

	*)

		[ -e ${MYSQL_CONF} ] && create_config || true

		exec "$@"

		;;

esac