Make releasetfw ain't joke no more

hack/tfw.sh

@@ -39,8 +39,7 @@ release_baseimage()
     read -p "Tag and push new TFW version \"${TAG}\"? [y/N]" -r && echo
     if [[ $REPLY =~ ^(y|Y|yes|Yes|YES)$ ]]
     then
-        git tag -s -m "$1" "$TAG"
-        git push origin $TAG
+        TAG="$TAG" force_push_tag
     fi
 }
 
@@ -55,6 +54,14 @@ check_drone_releasename()
     fi
 }
 
+force_push_tag()
+{
+    git tag -d "$TAG" > /dev/null 2>&1 || :
+    git push --delete origin "$TAG" > /dev/null 2>&1 || :
+    git tag -s -m "$1" "$TAG"
+    git push origin "$TAG"
+}
+
 baseimage_releasename()
 {
     VERSION="$(cat VERSION | head -n 1)"