fix naming

script/lib/docker.sh

@@ -4,7 +4,7 @@
 # (opencontainers/runc#5007) that fails RUN steps during image build.
 
 use_builder() {
-  local builder=vibe-builder
+  local builder=tbd-builder
   if ! docker buildx inspect "$builder" >/dev/null 2>&1; then
     docker buildx create --name "$builder" \
       --driver docker-container \
@@ -13,8 +13,8 @@ use_builder() {
   docker buildx use "$builder"
 }
 
-# Builds the app image with the test and coverage deps pre-fetched, tagged vibe-unit.
+# Builds the app image with the test and coverage deps pre-fetched, tagged tbd-unit.
 build_unit_image() {
   use_builder
-  docker buildx build --load --build-arg DEPS_ALIASES=test:cov -t vibe-unit .
+  docker buildx build --load --build-arg DEPS_ALIASES=test:cov -t tbd-unit .
 }