Invalid reference format for Docker build command when no Astro project name is specified

[thomas-lochner]

Describe the bug

Upon creation of a new Astro project, the astro cli runs into errors when a name for the project is not yet set. It took a while of debugging to figure this out, so a friendly warning here may be much more user-friendly.

Checking your DAGs for errors,
this might take a minute if you haven't run this command before…
[build --pull -t _832a2a/airflow:latest -f Dockerfile .]
[+] Building 0.0s (0/0)                                                                                                                                                                                                                                                                                                                 docker:desktop-linux
ERROR: invalid tag "_832a2a/airflow:latest": invalid reference format
Error: something went wrong while parsing your DAGs: command 'docker build -t _832a2a/airflow:latest failed: failed to execute cmd: exit status 1

What CLI Version did you experience this bug?
1.31.0

This CLI bug is related to which Astronomer Platform?

• Astro
• Software
• None/Unknown

What Operating System is the above CLI installed on?
MacOS

🪜 Steps To Reproduce
Create a new Astro project and run an astro command. I was personally using astro dev parse.

📸 Screenshots