message: Fix docker instructions for running without docker-compose
  Correct definition of config volume. Previously, it would create a `config.json` folder on the host upon first creation of the container, which prevents the app to create the `config.json` file.
diff: @@ -83,7 +83,7 @@ If you want to run the container by yourself, here you go:
  docker run \
  -p 80:80 \
  -e NODE_ENV=production \
  - -v <path to your config file folder>/config.json:/app/data/config/config.json \
  + -v <path to your config file folder>:/app/data/config \
  -v <path to your db file folder>:/app/data/db \
  -v <path to your images folder>:/app/data/images \
  -v <path to your temp folder>:/app/data/tmp \
  