fix dockerfile generation

tools/goctl/Makefile

@@ -3,8 +3,8 @@ version := $(shell /bin/date "+%Y-%m-%d %H:%M")
 build:
 	go build -ldflags="-s -w" -ldflags="-X 'main.BuildTime=$(version)'" goctl.go && upx goctl
 mac:
-	GOOS=darwin go build -ldflags="-s -w" -ldflags="-X 'main.BuildTime=$(version)'" -o goctl-darwin goctl.go
+	GOOS=darwin go build -ldflags="-s -w" -ldflags="-X 'main.BuildTime=$(version)'" -o goctl-darwin goctl.go && upx goctl-darwin
 win:
-	GOOS=windows go build -ldflags="-s -w" -ldflags="-X 'main.BuildTime=$(version)'" -o goctl.exe goctl.go
+	GOOS=windows go build -ldflags="-s -w" -ldflags="-X 'main.BuildTime=$(version)'" -o goctl.exe goctl.go && upx goctl.exe
 linux:
-	GOOS=linux go build -ldflags="-s -w" -ldflags="-X 'main.BuildTime=$(version)'" -o goctl-linux goctl.go
+	GOOS=linux go build -ldflags="-s -w" -ldflags="-X 'main.BuildTime=$(version)'" -o goctl-linux goctl.go && upx goctl-linux

tools/goctl/api/gogen/gen.go

@@ -141,23 +141,26 @@ func createGoModFileIfNeed(dir string) {
 	}
 
 	_, hasGoMod := util.FindGoModPath(dir)
-	if !hasGoMod {
+	if hasGoMod {
+		return
+	}
+
 	gopath := os.Getenv("GOPATH")
 	parent := path.Join(gopath, "src")
 	pos := strings.Index(absDir, parent)
-		if pos < 0 {
+	if pos >= 0 {
+		return
+	}
+
 	moduleName := absDir[len(filepath.Dir(absDir))+1:]
 	cmd := exec.Command("go", "mod", "init", moduleName)
 	cmd.Dir = dir
 	var stdout, stderr bytes.Buffer
 	cmd.Stdout = &stdout
 	cmd.Stderr = &stderr
-			err := cmd.Run()
-			if err != nil {
+	if err = cmd.Run(); err != nil {
 		fmt.Println(err.Error())
 	}
 	outStr, errStr := string(stdout.Bytes()), string(stderr.Bytes())
 	fmt.Printf(outStr + "\n" + errStr)
-		}
-	}
 }

tools/goctl/gen/dockerfile.go

@@ -1,6 +1,7 @@
 package gen
 
 import (
+	"path/filepath"
 	"strings"
 	"text/template"
 
@@ -9,11 +10,16 @@ import (
 )
 
 func GenerateDockerfile(goFile string, args ...string) error {
-	projPath, err := getFilePath(goFile)
+	projPath, err := getFilePath(filepath.Dir(goFile))
 	if err != nil {
 		return err
 	}
 
+	pos := strings.IndexByte(projPath, '/')
+	if pos >= 0 {
+		projPath = projPath[pos+1:]
+	}
+
 	out, err := util.CreateIfNotExist("Dockerfile")
 	if err != nil {
 		return err