gitlab-ci-cd/drupal#61 Add wait tool

Dockerfile

@@ -133,6 +133,8 @@ RUN echo 'hosts: files dns' > /etc/nsswitch.conf && \
     rm -rf /var/cache/* && \
     rm -rf /root/.composer/cache
 
+COPY --from=ghcr.io/ufoscout/docker-compose-wait:latest /wait /wait
+
 ENV LAKEDROPS_DEV_DC_OPTIONS "-T"
 ENV PHP_VERSION "${PHP_MAJOR_VERSION}"