How to survive to an impetus Sarkar.
From the root directory, run the following command to build the Docker image. The -t flag lets you tag your image so it's easier to find later using the docker images command:
$ docker build -t /sarkar-challenge .
Your image will now be listed by Docker:
$ docker images
Running your image with -d runs the container in detached mode, leaving the container running in the background. The -p flag redirects a public port to a private port inside the container. Run the image you previously built:
$ docker run -p 9292:9292 -d /sarkar-challenge