Excalidraw: docker build failing

[dwelle]

Docker action fails on build: https://github.com/excalidraw/excalidraw/runs/1322045132#step:4:168

Unclear why it's failing for docker action, and not for regular build on Vercel.

The only thing that could explain this is recent upgrade to CRA@4 (it started failing from this PR: https://github.com/excalidraw/excalidraw/pull/2302)

Maybe we should upgrade to https://github.com/docker/build-push-action v2 and see if it helps, though that seems dubious.

/cc @kbariotis

[lipis]

Updating to latest seems like a good start.

[Jan-M]

Local Docker image build is failing for me with the above referenced errors too.

[kbariotis]

Thanks to @Mogztter for fixing this. #2348