finishing up docker-compose for development environment

README.md

app/models/user.rb

config/application.rb

docker-compose.yml

docker/README.md

docker/create_admin_and_community.rb

docker/dummy.env

docker/entrypoint.sh

docker/img/categories.png

docker/img/create-post.png

docker/img/logged-in.png

docker/img/post.png

docker/img/tagset-selected.png

docker/img/tagset.png