Fix unknown $(MOUNTS) variable in makefile plugins target

Signed-off-by: Silvin Lubecki <[email protected]>

docker.Makefile

@@ -63,7 +63,7 @@ binary: build_binary_native_image ## build the CLI
 build: binary ## alias for binary
 
 plugins: build_binary_native_image ## build the CLI plugin examples
-	docker run --rm $(ENVVARS) $(MOUNTS) $(BINARY_NATIVE_IMAGE_NAME) ./scripts/build/plugins
+	docker run --rm $(ENVVARS) $(DOCKER_CLI_MOUNTS) $(BINARY_NATIVE_IMAGE_NAME) ./scripts/build/plugins
 
 .PHONY: clean
 clean: build_docker_image ## clean build artifacts
@@ -87,15 +87,15 @@ binary-windows: build_cross_image ## build the CLI for Windows
 
 .PHONY: plugins-windows
 plugins-windows: build_cross_image ## build the example CLI plugins for Windows
-	docker run --rm $(ENVVARS) $(MOUNTS) $(CROSS_IMAGE_NAME) make $@
+	docker run --rm $(ENVVARS) $(DOCKER_CLI_MOUNTS) $(CROSS_IMAGE_NAME) make $@
 
 .PHONY: binary-osx
 binary-osx: build_cross_image ## build the CLI for macOS
 	$(DOCKER_RUN) $(CROSS_IMAGE_NAME) make $@
 
 .PHONY: plugins-osx
 plugins-osx: build_cross_image ## build the example CLI plugins for macOS
-	docker run --rm $(ENVVARS) $(MOUNTS) $(CROSS_IMAGE_NAME) make $@
+	docker run --rm $(ENVVARS) $(DOCKER_CLI_MOUNTS) $(CROSS_IMAGE_NAME) make $@
 
 .PHONY: dev
 dev: build_docker_image ## start a build container in interactive mode for in-container development