gcloud builds submit with a fatal: not a git repository

Question

I have a Go Dockerfile from https://cloud.google.com/run/docs/quickstarts/build-and-deploy with a one line change so that I can tell what version I'm running:

RUN go build -ldflags "-X main.Version=$(git describe --always)" -mod=readonly -v -o server

When I build locally via docker build . and test, there is no problem with git describe, however if I submit the Docker to be built via gcloud builds submit it fails with:

fatal: not a git repository (or any of the parent directories): .git

How do I build my Cloud Run docker image so it has this Git version reference?

Answer 1

When you perform gcloud builds submit, all the project files aren't sent to Cloud Build. The command take into account your .gitignore file and the .gcloudignore file. If you haven't a .gcloudignore a default behavior is enforced in addition of the .gitignore file directive. More detail here

So, to fix this, create a .gcloudignore file with only the file to exclude for your Build. So, let the .git/ (don't add it in the file) and it will work.