Add Dockerfile and CMD to dockercompose

Author: alallema

CONTRIBUTING.md

@@ -32,7 +32,7 @@ You can set up your local environment natively or using `docker`, check out the
 
 Example of running all the checks with docker:
 ```bash
-docker-compose run --rm package bash -c "pipenv run mypy meilisearch && pipenv run pylint meilisearch && pipenv run pytest tests"
+docker-compose run package
 ```
 
 To install dependencies:

Dockerfile

@@ -9,3 +9,4 @@ RUN apt-get update \
 # Install pipenv and compilation dependencies
 RUN pip3 install pipenv
 RUN pipenv install --dev
+CMD pipenv run mypy meilisearch && pipenv run pylint meilisearch && pipenv run pytest tests