unset GOBIN in Makefile
If the GOBIN environment variable is set to a non-default location
relative to GOPATH, then promu will be built in this location and the
the build will fail because it tries to run $GOPATH/bin/promu.
See also issue and
# See the License for the specific language governing permissions and
# limitations under the License.
+# Ensure GOBIN is not set during build so that promu is installed to the correct path
+unexport GOBIN
+
GO ?= go
GOFMT ?= $(GO)fmt
FIRST_GOPATH := $(firstword $(subst :, ,$(shell $(GO) env GOPATH)))
