Fix: set rails envvars to docker container

Adds the RAILS_LOG_TO_STDOUT and RAILS_SERVE_STATIC_FILES
environment variables that are now needed inside the Docker
images.

Dockerfile

@@ -22,6 +22,8 @@ ENV BUNDLE_GEMFILE=${gemfile}
 ENV PUMA_OPTIONS "--preload -w 4 -p 3000"
 ENV NNDD_VERSION "cdx-0.11-pre7"
 ENV RAILS_ENV=production
+ENV RAILS_LOG_TO_STDOUT=true
+ENV RAILS_SERVE_STATIC_FILES=true
 
 # Install gem bundle
 COPY Gemfile* cdx.gemspec cdx-api-elasticsearch.gemspec /app/