improve script compatibility (#93)

scripts/binaries.mk

@@ -8,7 +8,7 @@ COPY go.mod go.sum ./
 RUN go mod download
 COPY . ./
 ARG VERSION
-ENV CGO_ENABLED 0
+ENV CGO_ENABLED=0
 RUN rm -rf tmp binaries
 RUN mkdir tmp binaries
 
@@ -45,5 +45,5 @@ binaries:
 	echo "$$DOCKERFILE_BINARIES" | DOCKER_BUILDKIT=1 docker build . -f - \
 	--build-arg VERSION=$$(git describe --tags) \
 	-t temp
-	docker run --rm -v $(PWD):/out \
+	docker run --rm -v $(shell pwd):/out \
 	temp sh -c "rm -rf /out/binaries && cp -r /s/binaries /out/"

scripts/format.mk

@@ -6,5 +6,5 @@ export DOCKERFILE_FORMAT
 
 format:
 	echo "$$DOCKERFILE_FORMAT" | docker build -q . -f - -t temp
-	docker run --rm -it -v $(PWD):/s -w /s temp \
+	docker run --rm -it -v $(shell pwd):/s -w /s temp \
 	sh -c "gofumpt -l -w ."

scripts/lint.mk

@@ -1,4 +1,4 @@
 lint:
-	docker run --rm -v $(PWD):/app -w /app \
+	docker run --rm -v $(shell pwd):/app -w /app \
 	$(LINT_IMAGE) \
 	golangci-lint run -v

scripts/mod-tidy.mk

@@ -1,3 +1,3 @@
 mod-tidy:
-	docker run --rm -it -v $(PWD):/s -w /s $(BASE_IMAGE) \
+	docker run --rm -it -v $(shell pwd):/s -w /s $(BASE_IMAGE) \
 	sh -c "apk add git && GOPROXY=direct go mod tidy"

scripts/test.mk

@@ -10,6 +10,6 @@ export DOCKERFILE_TEST
 test:
 	echo "$$DOCKERFILE_TEST" | docker build -q . -f - -t temp
 	docker run --rm \
-	-v $(PWD):/s -w /s \
+	-v $(shell pwd):/s -w /s \
 	temp \
 	go test -v -race -coverprofile=coverage.txt .