fix to be able to release linux arm binaries

also add darwin arm64 binary

.gitignore

@@ -1,4 +1,6 @@
 crane_darwin_amd64
+crane_darwin_arm64
 crane_linux_amd64
-crane_linux_386
+crane_linux_arm
+crane_linux_arm64
 crane_windows_amd64.exe

Makefile

@@ -7,7 +7,7 @@ imports:
 fmt:
 	@(gofmt -w crane)
 
-build: build-linux build-darwin build-windows
+build: build-linux build-linux-arm build-linux-arm64 build-darwin build-darwin-arm64 build-windows
 
 build-linux: imports
 	GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -o crane_linux_amd64 -v github.com/michaelsauter/crane/v3
@@ -21,5 +21,8 @@ build-linux-arm64: imports
 build-darwin: imports
 	GOOS=darwin GOARCH=amd64 CGO_ENABLED=0 go build -o crane_darwin_amd64 -v github.com/michaelsauter/crane/v3
 
+build-darwin-arm64: imports
+	GOOS=darwin GOARCH=arm64 CGO_ENABLED=0 go build -o crane_darwin_arm64 -v github.com/michaelsauter/crane/v3
+
 build-windows: imports
 	GOOS=windows GOARCH=amd64 CGO_ENABLED=0 go build -o crane_windows_amd64.exe -v github.com/michaelsauter/crane/v3