add a makefile

Makefile

@@ -0,0 +1,13 @@
+bin/springer:
+	go build -o bin/springer server/main.go
+
+# Use zig as the cc to cross-compile mattn/sqlite for linux
+#
+# working off https://zig.news/kristoff/building-sqlite-with-cgo-for-every-os-4cic
+#
+# this is basically magic
+# 
+# to run locally:
+#   docker run -it -v $(pwd)/bin:/app ubuntu /app/springer-linux
+bin/springer-linux:
+	CGO_ENABLED=1 GOOS=linux GOARCH=amd64 CC="zig cc -target x86_64-linux" CXX="zig cc -target x86_64-linux" go build -o bin/springer-linux server/main.go