Add awslabs to git safe dir

[ktasper]

Issue #, if available:
Fixes the following error when running make build-in-docker for ISSUE: #800

git rev-parse --short=7 HEAD > GITCOMMIT_SHA
fatal: detected dubious ownership in repository at '/go/src/github.com/awslabs/amazon-ecr-credential-helper'
To add an exception for this directory, call:

        git config --global --add safe.directory /go/src/github.com/awslabs/amazon-ecr-credential-helper
make: *** [Makefile:95: GITCOMMIT_SHA] Error 128

Description of changes:

• Adds /go/src/github.com/awslabs/amazon-ecr-credential-helper to git as a safe directory.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[austinvazquez]

Thanks for looking into the issue. The challenge really comes from the build mounting .git directory into the container which is fine when building with non-root users but breaks as you have found when running as root users. I'd like to look more into simplifying this build logic as a seperate issue but first it would be good to get a workaround for this.

Can you apply the following patch to the Makefile along with your change? This way we generate the required shasum before going into the container as a workaround

diff --git a/Makefile b/Makefile
index 6fbed4f..fac7fb3 100644
--- a/Makefile
+++ b/Makefile
@@ -36,7 +36,7 @@ WINDOWS_ARM64_BINARY=$(BINPATH)/windows-arm64/$(BINARY_NAME).exe
 .PHONY: docker
 docker: build-in-docker
 
-%-in-docker:
+%-in-docker: GITCOMMIT_SHA
        docker run --rm \
                --user $(UID):$(GID) \
                --env TARGET_GOOS=$(TARGET_GOOS) \

[pendo324]

LGTM, thanks!