diff --git a/Makefile b/Makefile
index 05c90c6..f83ba11 100644
--- a/Makefile
+++ b/Makefile
@@ -1,31 +1,32 @@
-BUILD    := $(shell git log -1 --pretty=%h)
+BUILD    := $(shell git describe --tags --always --dirty)
+DIR := $(shell pwd)
 TEST_DIR := $(dir $(abspath $(lastword $(MAKEFILE_LIST))))test
 
 # define image names
-APP      := scidb
-REGISTRY := fhprs
+APP      := fhprs
+REGISTRY := seglh
 
 # build tags
 IMG           := $(REGISTRY)/$(APP)
 IMG_VERSIONED := $(IMG):$(BUILD)
 IMG_LATEST    := $(IMG):latest
 
-.PHONY: push build tag test
+.PHONY: push build tag test version cleanbuild
 
-.PHONY: build
-
-push: build tag
+push: build
 	docker push $(IMG_VERSIONED)
 	docker push $(IMG_LATEST)
 
-build:
-	docker build -t $(IMG_VERSIONED) .
-
-tag:
+build: version
+	docker buildx build --platform linux/amd64 -t $(IMG_VERSIONED) . || docker build -t $(IMG_VERSIONED) .
 	docker tag $(IMG_VERSIONED) $(IMG_LATEST)
+	docker save $(IMG_VERSIONED) | gzip > $(DIR)/$(REGISTRY)-$(APP):$(BUILD).tar.gz
 
 test: build
 	echo "Incomplete VCF (positions missing):"
 	docker run -it --rm -v $(TEST_DIR):/resources $(IMG_VERSIONED) /resources/incomplete.vcf
 	echo "Complete VCF (all variant positions covered):"
 	docker run -it --rm -v $(TEST_DIR):/resources $(IMG_VERSIONED) /resources/complete.vcf
+
+cleanbuild:
+	docker buildx build --platform linux/amd64 --no-cache -t $(IMG_VERSIONED) .
\ No newline at end of file
diff --git a/README b/README.md
similarity index 56%
rename from README
rename to README.md
index 442046f..62a3ed6 100644
--- a/README
+++ b/README.md
@@ -9,6 +9,16 @@ Code adopted from Bristol and modernised for python3 and pyVCF. Uses build 38 ge
 ## Docker image build
 `make build`
 
+To build the docker image from scratch, using no cached layers:
+
+`make cleanbuild` 
+
+## Docker image upload
+To upload the built docker image to DockerHub:
+
+`make push`
+
 ## Test
-This runs against the two files with all or paritally missing positions
+This runs against the two files with all or partially missing positions
+
 `make test`