Composer1 by default but install composer2

Author: dbpolito

template/Dockerfile.blade.php

@@ -66,6 +66,7 @@
     && cp "/usr/local/etc/php/php.ini-{{ $prod ? 'production' : 'development' }}" "/usr/local/etc/php/php.ini" \
     # composer
     && curl -sS https://getcomposer.org/installer | php -- --1 --install-dir=/usr/local/bin --filename=composer \
+    && curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer2 \
     && su-exec kool composer global require hirak/prestissimo \
     # cleanup
     && apk del .build-deps \