FROMcommand specifies what existing image we want to use as our base. In this case we're using Debian Linux in its version tagged as
latest. You can search for existing images using the Docker Hub.
/golem/input) and one for outgoing ones (
ENTRYPOINTstatement is effectively ignored and replaced with the exeunit's own entrypoint.
Dockerfilewe can now build an image based on that file. To do so, we're going to use Docker's
golem-exampleto its output image. Once it's finished we should see the message
Successfully tagged golem-example:latestin the terminal's output.