diff --git a/lib/build/Makefile.docker_image b/lib/build/Makefile.docker_image
index 67c522eb..9fb3c17f 100644
--- a/lib/build/Makefile.docker_image
+++ b/lib/build/Makefile.docker_image
@@ -73,18 +73,16 @@ promote_image: $(HOME)/.docker/cli-plugins/docker-buildx
 	  --build-arg=BUILD_DATE=$(shell date +%Y-%m-%dT%H:%M:%SZ)
 
 	# update dockerhub README
-	[ -s /usr/bin/jq ] || apk add jq
-	@JSON=$$(jq -n --arg pwd "$(DOCKER_TOKEN)" --arg user "$(USER_LOGIN)" \
-	  '{username: $user, password: $pwd}')
-	@JWT=$$(curl -s -H "Content-Type: application/json" -X POST \
-	  -d "$$JSON" https://hub.docker.com/v2/users/login/ |jq -r .token)
-	# Build JSON payload securely and send PATCH request
-	# jq --arg escapes special characters / newlines in markdown text
-	RESP=$$(jq -n --arg desc "$(<README.md)" '{"full_description": $desc}' | \
+	# jq --arg or --rawfile escapes special characters / newlines
+	JSON=$$(jq -n --arg pwd "$(DOCKER_TOKEN)" --arg user "$(USER_LOGIN)" \
+	  '{username: $$user, password: $$pwd}') && \
+	JWT=$$(curl -s -H "Content-Type: application/json" -X POST \
+	  -d "$$JSON" https://hub.docker.com/v2/users/login/ | jq -r .token) && \
+	RESP=$$(jq -n --rawfile desc README.md '{"full_description": $$desc}' | \
 	  curl -s -o /dev/null -w "%{http_code}" -X PATCH \
 	  -H "Content-Type: application/json" \
-	  -H "Authorization: JWT $$JWT" \
-	  -d @- https://hub.docker.com/v2/repositories/$(IMAGE_REPO)/
+	  -H "Authorization: Bearer $$JWT" \
+	  -d @- https://hub.docker.com/v2/repositories/$(IMAGE_REPO)/) && \
 	[ "$$RESP" -eq 200 ] || exit 1
 
 flake8: test_requirements