From d54ebf4bdc18db5ef89e75571ac2242353edb72c Mon Sep 17 00:00:00 2001
From: Martin Maly <mmaly@google.com>
Date: Wed, 4 May 2022 12:22:27 -0700
Subject: [PATCH] Use commit SHA for image tags by default

---
 porch/Makefile | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/porch/Makefile b/porch/Makefile
index 05630d8fc5..1a398bcb98 100644
--- a/porch/Makefile
+++ b/porch/Makefile
@@ -28,7 +28,16 @@ MODULES = \
 # GCP project to use for development
 export GCP_PROJECT_ID ?= $(shell gcloud config get-value project)
 export IMAGE_REPO ?= gcr.io/$(GCP_PROJECT_ID)
-export IMAGE_TAG ?= latest
+export IMAGE_TAG
+ifndef IMAGE_TAG
+  git_tag := $(shell git rev-parse --short HEAD || "latest" )
+  $(shell git diff --quiet)
+  ifneq ($(.SHELLSTATUS), 0)
+    git_tag := $(git_tag)-dirty
+  endif
+
+  IMAGE_TAG=$(git_tag)
+endif
 
 PORCH_SERVER_IMAGE ?= porch-server
 PORCH_FUNCTION_RUNNER_IMAGE ?= porch-function-runner