My first steps - docker under Ubuntu, build an image from given Dockerfile

General
1

I installed docker --version 25.0.2 build 29cf629 (hopefully all went well) under Ubuntu 23.04 in a Virtual Box under macOS.

docker run hello-word and docker run -it ubuntu bash are working.

I got a Dockerfile which I would like to run. It contains the prerequisites for the project I want to build. How can I achieve this?

EDIT. When I run

$  pwd
/root/dockerbuild
$ ls
Docker
$ docker build
ERROR: "docker buildx build" requires exactly 1 argument.
See 'docker buildx build --help'.
Usage: docker buildx build [OPTIONS] PATH | URL | - 

Start a build
root@ubuntu22~/dockerbuild$
2

You might want to make it a habit to take a look into the official documentation, if something is unclear:

The get started guide in the official documentation covers the topic as well:

3

Thanks. I got it solved by using:

docker build < - Dockerfile

4

You might want to use a tag and set the local folder as build context instead:
https://docs.docker.com/reference/cli/docker/image/build/#tag