Remove legacy install.sh wordpress script

#!/bin/sh

set -eu

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

VERSION="$1"

SHA1="$2"

URL="https://wordpress.org/wordpress-${VERSION}.tar.gz"

# check user has not attempted to override WORDPRESS_VERSION

test "$VERSION" = "$WORDPRESS_VERSION" ||

	die 'Use --build-arg="version=[...]" to set the wordpress version'

# get a hash if not passed in

if [ -z "$SHA1" ]; then

	SHA1="$(curl -sSL "${URL}.sha1")"

fi

curl -o wordpress.tar.gz -SL "$URL"

# check hash if available

if [ -n "$SHA1" ]; then

	echo "${SHA1} *wordpress.tar.gz" | sha1sum -c - ||

		die "Hash does not match, maybe there was a download error?"

fi

# unpack source

tar -xzf wordpress.tar.gz -C /usr/src/ &&

	rm wordpress.tar.gz