Requiring docker when supplying --out

[lamebear]

Is there an existing issue for this?

• [X] I have searched the existing issues

Describe the bug

I run into an error when running nixpacks build with the --out param:

Error: Please install Docker to build the app https://docs.docker.com/engine/install/

To reproduce

nixpacks build . --name some-name --out path/to/out/dir --no-cache --config assets/nixpacks/golang.toml --build-cmd "go build -o out ./path/to/source"

Expected behavior

Docker should not be required for generating a Dockerfile

Environment

Alpine 3.19 Nixpacks 1.24.6