修复CI死锁

README.md

@@ -5,6 +5,7 @@ A global proxy for go modules. see: [https://goproxy.io](https://goproxy.io)
 
 ## Requirements
     It invokes the local go command to answer requests.
+    The default cacheDir is GOPATH, you can set it up by yourself according to the situation.
 
 ## Build
     git clone https://github.com/goproxyio/goproxy.git
@@ -18,6 +19,9 @@ A global proxy for go modules. see: [https://goproxy.io](https://goproxy.io)
     
     ./bin/goproxy -listen=0.0.0.0:80 -cacheDir=/tmp/test
 
+    If you run `go get -v pkg` in the proxy machine, shuold set a new GOPATH which is not different from the old GOPATH, or mayebe deadlock.
+    See the file test/get_test.sh.
+
 ### Router mode    
 
 Use the -proxy flag switch to "Router mode", which 

main.go

@@ -174,7 +174,7 @@ func (*ops) List(ctx context.Context, mpath string) (proxy.File, error) {
 	if err != nil {
 		return nil, err
 	}
-	file := filepath.Join(downloadRoot, escMod+"/@v/listproxy")
+	file := filepath.Join(downloadRoot, escMod+"/@v/list")
 	if info, err := os.Stat(file); err == nil && time.Since(info.ModTime()) < listExpire {
 		return os.Open(file)
 	}

test/get_test.sh

@@ -2,6 +2,7 @@
 
 export GO111MODULE=on
 export GOPROXY='http://127.0.0.1:8081'
+export GOPATH=/tmp/go
 
 datafile='test/testdata/get.txt'