Fix release build

This forces xgo to use Go 1.15, to work around a bug with Go modules:
https://github.com/techknowlogick/xgo/issues/109#issuecomment-835494720

This also uses the correct Darwin and Windows binary names to prevent
failures in the `make release` process.

Dockerfile

@@ -1,5 +1,5 @@
 # Build image
-FROM golang:1.14-alpine as build
+FROM golang:1.15-alpine as build
 
 RUN apk add --update nodejs nodejs-npm make g++ git
 RUN npm install -g less less-plugin-clean-css

Makefile

@@ -27,37 +27,37 @@ build-linux: deps
 	@hash xgo > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
 		$(GOGET) -u src.techknowlogick.com/xgo; \
 	fi
-	xgo --targets=linux/amd64, -dest build/ $(LDFLAGS) -tags='sqlite' -out writefreely ./cmd/writefreely
+	xgo --targets=linux/amd64, -dest build/ $(LDFLAGS) -tags='sqlite' -go go-1.15.x -out writefreely ./cmd/writefreely
 
 build-windows: deps
 	@hash xgo > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
 		$(GOGET) -u src.techknowlogick.com/xgo; \
 	fi
-	xgo --targets=windows/amd64, -dest build/ $(LDFLAGS) -tags='sqlite' -out writefreely ./cmd/writefreely
+	xgo --targets=windows/amd64, -dest build/ $(LDFLAGS) -tags='sqlite' -go go-1.15.x -out writefreely ./cmd/writefreely
 
 build-darwin: deps
 	@hash xgo > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
 		$(GOGET) -u src.techknowlogick.com/xgo; \
 	fi
-	xgo --targets=darwin/amd64, -dest build/ $(LDFLAGS) -tags='sqlite' -out writefreely ./cmd/writefreely
+	xgo --targets=darwin/amd64, -dest build/ $(LDFLAGS) -tags='sqlite' -go go-1.15.x -out writefreely ./cmd/writefreely
 
 build-arm6: deps
 	@hash xgo > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
 		$(GOGET) -u src.techknowlogick.com/xgo; \
 	fi
-	xgo --targets=linux/arm-6, -dest build/ $(LDFLAGS) -tags='sqlite' -out writefreely ./cmd/writefreely
+	xgo --targets=linux/arm-6, -dest build/ $(LDFLAGS) -tags='sqlite' -go go-1.15.x -out writefreely ./cmd/writefreely
 
 build-arm7: deps
 	@hash xgo > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
 		$(GOGET) -u src.techknowlogick.com/xgo; \
 	fi
-	xgo --targets=linux/arm-7, -dest build/ $(LDFLAGS) -tags='sqlite' -out writefreely ./cmd/writefreely
+	xgo --targets=linux/arm-7, -dest build/ $(LDFLAGS) -tags='sqlite' -go go-1.15.x -out writefreely ./cmd/writefreely
 
 build-arm64: deps
 	@hash xgo > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
 		$(GOGET) -u src.techknowlogick.com/xgo; \
 	fi
-	xgo --targets=linux/arm64, -dest build/ $(LDFLAGS) -tags='sqlite' -out writefreely ./cmd/writefreely
+	xgo --targets=linux/arm64, -dest build/ $(LDFLAGS) -tags='sqlite' -go go-1.15.x -out writefreely ./cmd/writefreely
 
 build-docker :
 	$(DOCKERCMD) build -t $(IMAGE_NAME):latest -t $(IMAGE_NAME):$(GITREV) .
@@ -105,13 +105,13 @@ release : clean ui assets
 	tar -cvzf $(BINARY_NAME)_$(GITREV)_linux_arm64.tar.gz -C build $(BINARY_NAME)
 	rm $(BUILDPATH)/$(BINARY_NAME)
 	$(MAKE) build-darwin
-	mv build/$(BINARY_NAME)-darwin-10.6-amd64 $(BUILDPATH)/$(BINARY_NAME)
+	mv build/$(BINARY_NAME)-darwin-10.12-amd64 $(BUILDPATH)/$(BINARY_NAME)
 	tar -cvzf $(BINARY_NAME)_$(GITREV)_macos_amd64.tar.gz -C build $(BINARY_NAME)
 	rm $(BUILDPATH)/$(BINARY_NAME)
 	$(MAKE) build-windows
 	mv build/$(BINARY_NAME)-windows-4.0-amd64.exe $(BUILDPATH)/$(BINARY_NAME).exe
 	cd build; zip -r ../$(BINARY_NAME)_$(GITREV)_windows_amd64.zip ./$(BINARY_NAME)
-	rm $(BUILDPATH)/$(BINARY_NAME)
+	rm $(BUILDPATH)/$(BINARY_NAME).exe
 	$(MAKE) build-docker
 	$(MAKE) release-docker
 

go.mod

@@ -46,4 +46,4 @@ require (
 	gopkg.in/ini.v1 v1.62.0
 )
 
-go 1.13
+go 1.15