diff --git a/Makefile b/Makefile
index a235271..89be40a 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,8 @@ _IMAGE_REPO_ESCAPED = $(subst /,\/,$(IMAGE_REPO))
 _IMAGE_REPO_DOUBLE_ESCAPED = $(subst \,\\\,$(_IMAGE_REPO_ESCAPED))
 _VOLID = $(firstword $(subst -, ,$(IMAGE_NAME)))-$(ARCH)-$(IMAGE_TAG)
 _REPO_FILES = $(subst /etc/yum.repos.d,repos,$(REPOS))
-_LORAX_TEMPLATES = $(subst .in,,$(shell ls lorax_templates/*.tmpl.in))
+_LORAX_TEMPLATES = $(subst .in,,$(shell ls lorax_templates/*.tmpl.in)) $(foreach file,$(shell ls lorax_templates/scripts/post),lorax_templates/post_$(file).tmpl)
+_TEMPLATE_VARS = ARCH VERSION IMAGE_REPO IMAGE_NAME IMAGE_TAG VARIANT WEB_UI REPOS _IMAGE_REPO_ESCAPED _IMAGE_REPO_DOUBLE_ESCAPED
 
 ifeq ($(VARIANT),Server)
 _LORAX_ARGS = --macboot --noupgrade
@@ -38,8 +39,50 @@ build/deploy.iso:  boot.iso container/$(IMAGE_NAME)-$(IMAGE_TAG) xorriso/input.t
 	implantisomd5 build/deploy.iso
 
 # Step 1: Generate Lorax Templates
+lorax_templates/post_%.tmpl: lorax_templates/scripts/post/%
+	# Support interactive-defaults.ks
+	$(eval _ISO_FILE = usr/share/anaconda/interactive-defaults.ks)
+	
+	header=0; \
+	while read -r line; \
+	do \
+	  if [[ $$line =~ ^\<\% ]]; \
+	  then \
+			echo $$line >> lorax_templates/post_$*.tmpl; \
+			echo >> lorax_templates/post_$*.tmpl; \
+	  else \
+		  if [[ $$header == 0 ]]; \
+			then \
+			  echo "append $(_ISO_FILE) \"%post --erroronfail\"" >> lorax_templates/post_$*.tmpl; \
+				header=1; \
+			fi; \
+	    echo "append $(_ISO_FILE) \"$$line\"" >> lorax_templates/post_$*.tmpl; \
+		fi; \
+	done < lorax_templates/scripts/post/$*
+	echo "append $(_ISO_FILE) \"%end\"" >> lorax_templates/post_$*.tmpl
+
+	# Support new Anaconda method
+	$(eval _ISO_FILE = usr/share/anaconda/post-scripts/configure_upgrades.ks)
+
+	header=0; \
+	while read -r line; \
+	do \
+	  if [[ $$line =~ ^\<\% ]]; \
+	  then \
+			echo >> lorax_templates/post_$*.tmpl; \
+	  else \
+		  if [[ $$header == 0 ]]; \
+			then \
+			  echo "append $(_ISO_FILE) \"%post --erroronfail\"" >> lorax_templates/post_$*.tmpl; \
+				header=1; \
+			fi; \
+	    echo "append $(_ISO_FILE) \"$$line\"" >> lorax_templates/post_$*.tmpl; \
+		fi; \
+	done < lorax_templates/scripts/post/$*
+	echo "append $(_ISO_FILE) \"%end\"" >> lorax_templates/post_$*.tmpl
+
 lorax_templates/%.tmpl: lorax_templates/%.tmpl.in
-	$(eval _VARS = IMAGE_NAME IMAGE_TAG _IMAGE_REPO_DOUBLE_ESCAPED)
+	$(eval _VARS = IMAGE_NAME IMAGE_TAG _IMAGE_REPO_DOUBLE_ESCAPED _IMAGE_REPO_ESCAPED)
 	$(foreach var,$(_VARS),$(var)=$($(var))) envsubst '$(foreach var,$(_VARS),$$$(var))' < $(_BASE_DIR)/lorax_templates/$*.tmpl.in > $(_BASE_DIR)/lorax_templates/$*.tmpl
 
 
@@ -58,13 +101,14 @@ boot.iso: $(_LORAX_TEMPLATES) $(_REPO_FILES)
 	rm -Rf $(_BASE_DIR)/results || true
 	rm /etc/rpm/macros.image-language-conf || true
 	lorax -p $(IMAGE_NAME) -v $(VERSION) -r $(VERSION) -t $(VARIANT) \
-          --isfinal --squashfs-only --buildarch=$(ARCH) --volid=$(_VOLID) \
-          $(_LORAX_ARGS) \
-          $(foreach file,$(_REPO_FILES),--repo $(_BASE_DIR)/$(file)) \
-          $(foreach file,$(_LORAX_TEMPLATES),--add-template $(_BASE_DIR)/$(file)) \
-		  $(foreach file,$(ADDITIONAL_TEMPLATES),--add-template $(file)) \
-		  --rootfs-size $(ROOTFS_SIZE) \
-          $(_BASE_DIR)/results/
+		--isfinal --squashfs-only --buildarch=$(ARCH) --volid=$(_VOLID) \
+		$(_LORAX_ARGS) \
+		$(foreach file,$(_REPO_FILES),--repo $(_BASE_DIR)/$(file)) \
+		$(foreach file,$(_LORAX_TEMPLATES),--add-template $(_BASE_DIR)/$(file)) \
+		$(foreach file,$(ADDITIONAL_TEMPLATES),--add-template $(file)) \
+		--rootfs-size $(ROOTFS_SIZE) \
+		$(foreach var,$(_TEMPLATE_VARS),--add-template-var "$(shell echo $(var) | tr '[:upper:]' '[:lower:]')=$($(var))") \
+		$(_BASE_DIR)/results/
 	mv $(_BASE_DIR)/results/images/boot.iso $(_BASE_DIR)/
 
 # Step 4: Download container image
diff --git a/action.yml b/action.yml
index 8cedd8d..219cc6b 100644
--- a/action.yml
+++ b/action.yml
@@ -46,7 +46,7 @@ runs:
         # Check if running inside of the action repo
         if [[ -z "${{ github.action_ref }}" ]]; then if [[ "${{ github.ref_name }}" =~ (.*)/merge ]]; then tag=pr-${BASH_REMATCH[1]}; else tag=${{ github.ref_name }}; fi; fi
         if [[ -z "${tag}" ]]; then tag=${{ github.action_ref }}; fi
-        docker run --privileged --volume .:/github/workspace/ ghcr.io/jasonn3/build-container-installer:${tag} \
+        docker run --privileged --volume ${{ github.workspace }}:/github/workspace/ ghcr.io/jasonn3/build-container-installer:${tag} \
           ARCH=${{ inputs.arch }} \
           IMAGE_NAME=${{ inputs.image_name }} \
           IMAGE_REPO=${{ inputs.image_repo }} \
diff --git a/lorax_templates/configure_upgrades.tmpl.in b/lorax_templates/configure_upgrades.tmpl.in
deleted file mode 100644
index eb75fa7..0000000
--- a/lorax_templates/configure_upgrades.tmpl.in
+++ /dev/null
@@ -1,8 +0,0 @@
-append usr/share/anaconda/interactive-defaults.ks "%post --erroronfail"
-append usr/share/anaconda/interactive-defaults.ks "sed -i 's/container-image-reference=.*/container-image-reference=ostree-image-signed:docker:\/\/${_IMAGE_REPO_DOUBLE_ESCAPED}\/${IMAGE_NAME}:${IMAGE_TAG}/' /ostree/deploy/default/deploy/*.origin"
-append usr/share/anaconda/interactive-defaults.ks "%end"
-
-append usr/share/anaconda/post-scripts/configure_upgrades.ks "%post --erroronfail"
-append usr/share/anaconda/post-scripts/configure_upgrades.ks "sed -i 's/container-image-reference=.*/container-image-reference=ostree-image-signed:docker:\/\/${_IMAGE_REPO_DOUBLE_ESCAPED}\/${IMAGE_NAME}:${IMAGE_TAG}/' /ostree/deploy/default/deploy/*.origin"
-append usr/share/anaconda/post-scripts/configure_upgrades.ks "%end"
-
diff --git a/lorax_templates/scripts/post/configure_upgrades b/lorax_templates/scripts/post/configure_upgrades
new file mode 100644
index 0000000..5b56ef2
--- /dev/null
+++ b/lorax_templates/scripts/post/configure_upgrades
@@ -0,0 +1,7 @@
+<%page args="image_repo, _image_repo_double_escaped, image_name, image_tag"/>
+if (which bootc &> /dev/null)
+then
+  bootc switch ${image_repo}/${image_name}:${image_tag}
+else
+  sed -i 's/container-image-reference=.*/container-image-reference=ostree-image-signed:docker:\/\/${_image_repo_double_escaped}\/${image_name}:${image_tag}/' /ostree/deploy/default/deploy/*.origin
+fi