buildx failed with: ERROR: failed to solve: process "/bin/sh -c apk --no-cache add git upx && go get -t ./... && go test -v ./... && go build -ldflags='-s -w' -o /semaphore-xds . && upx /semaphore-xds && cd example/server/ && go build -ldflags='-s -w' -o /semaphore-xds-echo-server . && cd ../client/ && go build -ldflags='-s -w' -o /semaphore-xds-echo-client ." did not complete successfully: exit code: 1