Bring back Docker Hub images

[cuducos]

As suggested in #240, after that PR was merged we'll need to get back to the images from Docker Hub. This is what this PR does ; )

[anaschwendler]

Hey @cuducos, let's make Docker great again!

What I did to test this PR:

1. Clone the repository:

$ git clone [email protected]:datasciencebr/jarbas.git

2. Open the repo folder:

$ cd jarbas

3. Checkout to @cuducos branch:

$ git checkout -b cuducos-bring-back-docker-hub-images origin/cuducos-bring-back-docker-hub-images

4. Update the branch:

$ git merge master

5. Copy the .env file:

$ cp contrib/.env.sample env

5. Build and start services:

$ docker-compose up -d

6. Create the database and apply the migrations:

$ docker-compose run --rm django python manage.py migrate

7. Seeding it with sample data:

$ docker-compose run --rm django python manage.py reimbursements /mnt/data/reimbursements_sample.x
$ docker-compose run --rm django python manage.py companies /mnt/data/companies_sample.xz
$ docker-compose run --rm django python manage.py suspicions /mnt/data/suspicions_sample.xz
$ docker-compose run --rm django python manage.py tweets

8. Access localhost:8000, and localhost:8000/dashboard to check some features, and then it good to merge.

Alright, checked, works fine! 🎉