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“docker build” requires exactly 1 argument

A short post for today. It had been a while since the last time I created a docker image through the commandline. This resulted in me making a stupid mistake and ended up with a docker build error.

I wanted to build a docker image and executed the following command from the folder containing my DOCKERFILE:

docker build -t rabbitmq-streaming

This failed with the following error message:

"docker build" requires exactly 1 argument.
See 'docker build --help'.

Did you notice my mistake?

I forgot to add exactly 1 extra character; a dot. This dot means that docker will use the DOCKERFILE in the local directory.

So the correct command becomes:

docker build -t rabbitmq-streaming .

Happy coding!

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