To pull the image and run the container for the first time, run the following commands:
docker pull mongo
docker run -d -p 27017-27019:27017-27019 --name mongo mongo:latest
After that, you can start the already existing container like this:
docker container start mongo
You can enter the docker container's bash terminal with the following command. Run mongo in there to inspect the database:
docker exec -it mongo bash
After having a running mongo instance, you can execute the following command to start the web application
npm start