Works in makefile.. why not in github?

Dockerfile

@@ -1,4 +1,4 @@
-FROM mariadb:latest
+FROM mariadb:10
 # Copy healthcheck file.
 COPY health.sh /usr/bin/healthcheck
 # Add healthcheck

Makefile

@@ -0,0 +1,16 @@
+CMD_BUILD=docker buildx build --push --platform linux/amd64,linux/arm64
+
+.PHONY: prepare cli nginx all
+
+all: cli prepare cli nginx
+
+prepare:
+	docker run --rm --privileged docker/binfmt:820fdd95a9972a5308930a2bdfb8573dd4447ad3
+	-docker buildx rm gone-builder
+	docker buildx create --name gone-builder
+	docker buildx use gone-builder
+	docker buildx inspect --bootstrap
+
+build: prepare
+	$(CMD_BUILD) -t benzine/mariadb -t ghcr.io/benzine-framework/docker-mariadb .
+