feat/add m1 arm build

I tried to run your tool on my M1 Mac, however failed due to the error

The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested

I added the linux/arm platform, however could not test it, as without the --push there are not local images. What I did was testing the build by manually adding FROM --platform=linux/arm node:slim to the Dockerfile