diff --git a/Dockerfile b/Dockerfile
index 4cb9383..ca7bec9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,9 +13,9 @@ RUN echo -e "\n ************************************************* \n"\
     echo " ---- running packages install script ---"; /bin/sh ./packages.sh; \
     echo -e "\n********************************************************" 
 
-ARG CACHE_BUST 
+ARG BUST_INIT_CACHE
 RUN echo -e "\n ************************************************* \n" \
-    echo "****** CACHE_BUST ${CACHE_BUST} "; \
+    echo "****** BUST_INIT_CACHE ${BUST_INIT_CACHE} "; \
     echo "****** Running Initialization Script "; \
     chmod -R +x .; \ 
     pwd; ls -la; \
diff --git a/build b/build
index 7c54652..0c65ede 100755
--- a/build
+++ b/build
@@ -40,12 +40,16 @@ exit_abnormal() {                         # Function: Exit with error.
 scripts_dir=$SDIR/src
 [[ -z "$PS1" ]] || no_prompt=true
 
-while getopts ':b:d:t:ncr:u:pxhs:w:akvo' OPTION; do
+while getopts ':b:d:t:ncr:u:pxhs:w:akvoi' OPTION; do
   # echo processing: option:$OPTION argument:$OPTARG index:$OPTIND remaining:${@:$OPTIND}
   case "$OPTION" in
   o)
     overwrite=true
   ;;
+  i)
+    BUST_INIT_CACHE=$(date)
+    # export BUST_INIT_CACHE=$(date)
+  ;;
   v)
     verbose=true
   ;;
@@ -114,6 +118,18 @@ done
 
 shift $((OPTIND - 1))
 
+if [[ ! -d $scripts_dir ]]; then
+  if [[ ! $no_prompt ]]; then
+    echo -e "\e[1;31mWARNING: build scripts directory$scripts_dir does not exist.\e[1;37m"
+    echo "Do you want to use the base scripts" 
+    read  -n 1 -p "directory at $BDIR/src? to continue [y]=>" REPLY
+    [[ $REPLY != "y" ]] && echo -e "\n" && return 0
+    echo 
+  fi
+  echo -e "\e[1;31mscripts directory $scripts_dir was not found using base build scripts at $BDIR/src\e[1;37m"  
+  scripts_dir=$BDIR/src   
+fi
+
 target=${1:-dev} 
 LINUX_DISTRO=${LINUX_DISTRO:-alpine}
 name=$2
@@ -121,7 +137,19 @@ RUSER=${3:-$RUSER}
 
 IMAGE_NAME=$([[ $RUSER ]] && echo ${RUSER}/)${name}$([[ (! $exclude_distro) && $name ]] && echo "-")$([[ ! $exclude_distro ]] && echo ${LINUX_DISTRO})
 # TODO writing to existing tag untags existing image so write a new tag to that image then continue
-[[ $(image_exists $IMAGE_NAME) ]] && [[ ! $overwrite ]] && { echo local image \'$(make_tag $IMAGE_NAME)\' exists use -o to overwrite; return 1; }
+
+# retag existing image and remove former tag
+if [[ $(image_exists $IMAGE_NAME) ]]; then
+  if [[ $overwrite ]]; then
+    image_delete $IMAGE_NAME 
+  else 
+    newtag=$(date +'%d%H%M%S')
+    echo image exists retaging $(make_tag $IMAGE_NAME) with tag :$newtag  
+    image_tag $IMAGE_NAME $IMAGE_NAME:$newtag
+    image_tag -r $IMAGE_NAME
+  fi 
+fi  
+
 
 if [[ $BASE_IMAGE ]]; then
 echo determining DISTRO of base image: $BASE_IMAGE
@@ -140,6 +168,8 @@ export IMAGE_NAME
 export LINUX_DISTRO
 export SCRIPTS
 export KEEP
+export SYSADMIN_PW
+export BUST_INIT_CACHE
 
 echo "******************************************"
 echo "Building with base image: $BASE_IMAGE"
@@ -183,7 +213,7 @@ fusermount -u .src > /dev/null 2>&1
 mkdir .src
 bindfs ${scripts_dir:-src} .src
 
-docker buildx --builder ${builder} bake ${nocache} ${target}  2>&1 | tee build.log
+docker buildx --builder ${builder} bake ${nocache} ${target}  2>&1 | tee $SDIR/${exIMAGE_NAME//\//-}build.log
 
 fusermount -u .src > /dev/null 2>&1
 rm -rf .src/
@@ -202,7 +232,7 @@ fi
 
 if [[ ($try || $target == "dev") ]] && [[ ! $no_prompt ]]; then
  echo trying newly built image in a container
- try_container $([[ $target == "deploy" ]] && echo -p) $IMAGE_NAME
+ try_container -m opt $([[ $target == "deploy" ]] && echo -p) $IMAGE_NAME
 fi 
 
 popd > /dev/null
diff --git a/docker-bake.hcl b/docker-bake.hcl
index 85c9140..d31949d 100644
--- a/docker-bake.hcl
+++ b/docker-bake.hcl
@@ -20,7 +20,7 @@ variable "KEEP" {
 variable "SYSADMIN_PW" {
   default = ""
 }
-variable "CACHE_BUST" {
+variable "BUST_INIT_CACHE" {
   default = "1"
 }
 
@@ -51,13 +51,13 @@ target "amd" {
   context    = "."
   dockerfile = "Dockerfile"
   args = {
-    LINUX_DISTRO = "${LINUX_DISTRO}"
-    BASE_IMAGE   = "${BASE_IMAGE}"
-    TAG          = "${TAG}"
-    SCRIPTS      = "/build/${SCRIPTS}"
-    KEEP         = "${KEEP}"
-    SYSADMIN_PW  = "${SYSADMIN_PW}"
-    CACHE_BUST   = "${CACHE_BUST}"
+    LINUX_DISTRO    = "${LINUX_DISTRO}"
+    BASE_IMAGE      = "${BASE_IMAGE}"
+    TAG             = "${TAG}"
+    SCRIPTS         = "/build/${SCRIPTS}"
+    KEEP            = "${KEEP}"
+    SYSADMIN_PW     = "${SYSADMIN_PW}"
+    BUST_INIT_CACHE = "${BUST_INIT_CACHE}"
   }
   tags      = tag("")
   platforms = ["linux/amd64"]