build: avoid the runtime error like "/lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found"

Author: yuuki

Makefile

@@ -8,7 +8,7 @@ OUT_DOCKER ?= tcpulse
 all: build
 
 build: vet staticcheck
-	$(GO) build -o $(OUT_BIN)
+	CGO_ENABLED=0 $(GO) build -o $(OUT_BIN)
 
 vet:
 	$(GO) vet ./...