Add CORS_ALLOW_ALL for dev sites

entrypoint.sh.tmpl

@@ -7,6 +7,11 @@ docker-php-ext-install {{ env "PHP_EXTENSIONS" }}
 curl -z /usr/local/bin/wp -o /usr/local/bin/wp https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar
 chmod +x /usr/local/bin/wp
 
+{{ if eq (env "CORS_ALLOW_ALL") "1" }}
+a2enmod headers
+sed -ri -e 's/^([ \t]*)(<\/VirtualHost>)/\1\tHeader set Access-Control-Allow-Origin "*"\n\1\2/g' /etc/apache2/sites-available/*.conf
+{{ end }}
+
 if [ -n "$@" ]; then
 	"$@"
 fi