Update versioning for no .git or go

scripts/version.sh

 #!/bin/bash
 
+ARCH=${ARCH:-$(go env GOARCH)}
+SUFFIX="-${ARCH}"
+GIT_TAG=$DRONE_TAG
 TREE_STATE=clean
-if [ -n "$(git status --porcelain --untracked-files=no)" ]; then
-    DIRTY="-dirty"
-    TREE_STATE=dirty
-fi
+COMMIT=unknown
 
-COMMIT=$(git log -n3 --pretty=format:"%H %ae" | grep -v ' drone@localhost$' | cut -f1 -d\  | head -1)
-if [ -z "${COMMIT}" ]; then
-  COMMIT=$(git rev-parse HEAD)
-fi
-
-GIT_TAG=${DRONE_TAG:-$(git tag -l --contains HEAD | head -n 1)}
+if [ -d .git ]; then
+    if [ -z "$GIT_TAG" ]; then
+        GIT_TAG=$(git tag -l --contains HEAD | head -n 1)
+    fi
+    if [ -n "$(git status --porcelain --untracked-files=no)" ]; then
+        DIRTY="-dirty"
+        TREE_STATE=dirty
+    fi
 
-ARCH=$(go env GOARCH)
-SUFFIX="-${ARCH}"
+    COMMIT=$(git log -n3 --pretty=format:"%H %ae" | grep -v ' drone@localhost$' | cut -f1 -d\  | head -1)
+    if [ -z "${COMMIT}" ]; then
+    COMMIT=$(git rev-parse HEAD || true)
+    fi
+fi
 
 VERSION_CONTAINERD=$(grep github.com/containerd/containerd go.mod | head -n1 | awk '{print $4}')
 if [ -z "$VERSION_CONTAINERD" ]; then