Couldn't run make build?

[sgalcheung]

When I git clone this repo and make a build, some issues occur

/pubstore/build go install ./cmd/pubstore/pubstore.go
/bin/sh: 工作（Work）: No such file or directory
make: *** [cmd/pubstore/pubstore.go] Error 1

After reach I found this problem:
The GOPATH setting method in this Makefile is based on the old Go project management method, which uses GOPATH. In modern Go development, it is recommended to use Go Modules to manage dependencies without the need to set GOPATH.

So, I update this Makefile

ROOT_DIR=$(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))

BUILD_DIR=$(ROOT_DIR)/build

rm=rm -rf

pubstore=cmd/pubstore/pubstore.go

swag=~/go/bin/swag

.PHONY: all clean $(pubstore) test docs run

all: $(pubstore)

clean:
    $(rm)  $(BUILD_DIR)

test:
    go test -coverpkg=./pkg/./... ./pkg/./...

build: $(pubstore)

docs:
    $(swag) init -g router.go -d pkg/api -o pkg/docs

$(pubstore):
    go install ./$@

run:
    go run $(pubstore)