message: only push images if they actually exist
diff: @@ -146,7 +146,7 @@ build/nginx-drupal: build/nginx images/nginx-drupal/Dockerfile
  build/varnish: build/commons images/varnish/Dockerfile
  build/varnish-drupal: build/varnish images/varnish-drupal/Dockerfile
  build/redis: build/commons images/redis/Dockerfile
  -build/mongo: build/centos7 images/mongo/Dockerfile
  +build/mongo: build/commons images/mongo/Dockerfile
  build/elasticsearch: build/commons images/elasticsearch/Dockerfile
  build/logstash: build/commons images/logstash/Dockerfile
  build/kibana: build/commons images/kibana/Dockerfile
  @@ -448,8 +448,10 @@ $(push-minishift-images):
  $(eval image = $(subst [push-minishift]-,,$@))
  $(eval image = $(subst __,:,$(image)))
  $(info pushing $(image) to minishift registry)
  - docker tag $(CI_BUILD_TAG)/$(image) $$(cat minishift):30000/lagoon/$(image)
  - docker push $$(cat minishift):30000/lagoon/$(image) | cat
  + if docker inspect $(CI_BUILD_TAG)/$(image) > /dev/null 2>&1; then \
  + docker tag $(CI_BUILD_TAG)/$(image) $$(cat minishift):30000/lagoon/$(image) && \
  + docker push $$(cat minishift):30000/lagoon/$(image) | cat; \
  + fi
  push-docker-host-image: build/docker-host minishift/login-docker-registry
  docker tag $(CI_BUILD_TAG)/docker-host $$(cat minishift):30000/lagoon/docker-host
  