dockerfile: fix path to tm binary from build stage

Author: Sameer Naik

Dockerfile

@@ -23,4 +23,4 @@ RUN apt-get update && \
     apt-get install --no-install-recommends --no-install-suggests -y ca-certificates && \
     rm -rf /var/lib/apt/lists/*
 
-COPY --from=build /go/bin/linux_amd64/tm /bin/tm
+COPY --from=build /go/bin/tm /bin/tm

Makefile

@@ -4,7 +4,7 @@ TARGETS      ?= darwin/amd64 linux/amd64 windows/amd64
 DIST_DIR     ?=
 
 GIT_REPO      = github.com/triggermesh/tm
-GIT_TAG      ?= $(shell git describe --tags --always)
+GIT_TAG      ?= $(shell git for-each-ref refs/tags --sort=-taggerdate --format='%(refname:short)' --count=1)
 
 DOCKER        = docker
 IMAGE_REPO   ?= gcr.io/triggermesh