Build docker image with current commit to prevent grabbing wrong tarball

Makefile

@@ -4,12 +4,13 @@ IMAGE_NAME ?= llvm
 XDG_DATA_HOME ?= $(HOME)/.local/share
 BUILD_DOCS ?= OFF
 RELEASE ?= 10.0.0
+SHA ?= `git rev-parse --short HEAD`
 CWD = `pwd`
 
 help:
-	@echo "$(IMAGE_NAME):$(RELEASE) (docs=$(BUILD_DOCS))"
+	@echo "$(IMAGE_NAME):$(RELEASE)-$(SHA) (docs=$(BUILD_DOCS))"
 	@echo ""
-	@perl -nle'print $& if m{^[a-zA-Z_-]+:.*?## .*$$}' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
+	@perl -nle'print $& if m{^[a-zA-Z_-]+:.*?## .*$$}' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}'
 
 clean: ## Clean up generated artifacts
 	@rm -rf build/host
@@ -82,10 +83,10 @@ dist-linux: ## Build an LLVM release distribution for x86_64-unknown-linux
 	@mkdir -p build/packages/ && \
 	cd lumen/ && \
 	docker build \
-		-t llvm-project:dist \
+		-t llvm-project:dist-$(RELEASE)-$(SHA) \
 		--target=dist \
 		--build-arg buildscript_args="-release=$(RELEASE) -clean-obj" . && \
-		utils/dist/extract-release.sh -release $(RELEASE)
+		utils/dist/extract-release.sh -release $(RELEASE) -sha $(SHA)
 
 docker: ## Build a Docker image containing an LLVM distribution
 	cd lumen/ && \

lumen/utils/dist/extract-release.sh

@@ -6,6 +6,7 @@ SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
 PACKAGES_DIR="$(cd "$SCRIPT_DIR"/../../../build/packages && pwd -P)"
 
 release=""
+sha=""
 
 while [ $# -gt 0 ]; do
     case $1 in
@@ -14,6 +15,11 @@ while [ $# -gt 0 ]; do
             release="$1"
             shift
             ;;
+        -sha | --sha )
+            shift
+            sha="$1"
+            shift
+            ;;
         *)
             echo "unknown option: $1"
             exit 2
@@ -26,8 +32,13 @@ if [ -z "$release" ]; then
     exit 2
 fi
 
+if [ -z "$sha" ]; then
+    echo "error: no sha hash specified"
+    exit 2
+fi
+
 cd "$PACKAGES_DIR"
-if ! id="$(docker create llvm-project:dist sh)"; then
+if ! id="$(docker create llvm-project:dist-${release}-${sha} sh)"; then
     echo "Could not create dist container!"
     exit 2
 fi