update get_version_from_git.sh script

scripts/get_version_from_git.sh

@@ -1,14 +1,19 @@
 #!/bin/sh
-TAG=$( git tag | grep -E "[0-9]\.[0-9]\.[0-9]" | sort -rn | head -n1 )
-
-if [ -n "${TAG}" ]; then
-  COMMITS_SINCE_TAG=$(git rev-list "${TAG}".. --count)
-  if [ "${COMMITS_SINCE_TAG}" -gt 0 ]; then
-    COMMIT_SHA=$(git show -s --format=%ct.%h HEAD)
-    SUFFIX="+git.dev${COMMITS_SINCE_TAG}.${COMMIT_SHA}"
-  fi
+
+# https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string
+SEMVER_REGEX="^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$"
+
+TAG=$(git tag | grep -P "$SEMVER_REGEX" | sed '/-/!{s/$/_/}' | sort -V | sed 's/_$//' | tail -n1)
+
+if [ -z "${TAG}" ]; then
+	echo "Could not find any semver tag" 1>&2
+	exit 1
 else
-  TAG="0"
+	COMMITS_SINCE_TAG=$(git rev-list "${TAG}".. --count)
+	if [ "${COMMITS_SINCE_TAG}" -gt 0 ]; then
+		COMMIT_INFO=$(git show -s --format=%ct.%h HEAD)
+		SUFFIX="+git.${COMMITS_SINCE_TAG}.${COMMIT_INFO}"
+	fi
 fi
 
 echo "${TAG}${SUFFIX}"