Update CI and add website

Makefile

@@ -3,6 +3,8 @@ all: dev
 MT_FLAGS := -sUSE_PTHREADS -pthread
 
 DEV_ARGS := --progress=plain
+CI_ARGS := --cache-from=type=local,src=build-cache --cache-to=type=local,dest=build-cache,mode=max
+
 DEV_CFLAGS := --profiling
 DEV_MT_CFLAGS := $(DEV_CFLAGS) $(MT_FLAGS)
 PROD_CFLAGS := -O3 -msimd128
@@ -48,5 +50,8 @@ prd:
 prd-mt:
 	make build-mt EXTRA_CFLAGS="$(PROD_MT_CFLAGS)"
 
-test:
-	npm run test
+ci:
+	make prd EXTRA_ARGS="$(CI_ARGS)"
+
+ci-mt:
+	make prd-mt EXTRA_ARGS="$(CI_ARGS)"