Set production environment in Dockerfile

Author: Vidas P

Dockerfile

@@ -7,6 +7,8 @@ WORKDIR /app
 
 COPY ./ /app/
 
+ENV RAILS_ENV=production
+
 # Get rid of annoying "fatal: Not a git repository (or any of the parent directories): .git" messages
 RUN umask 002 && git init && \
     LC_ALL=en_US.UTF-8 RAILS_ENV=production SECRET_KEY_BASE=secret bundle install --without "test development" --path vendor/bundle -j 4 --no-local --no-cache --force  && \