add upx step

.drone.yml

@@ -60,7 +60,7 @@ steps:
     pull: always
     image: golang:1.14
     commands:
-      - "go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/amd64/drone-upx"
+      - "go build -v -ldflags '-X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/amd64/drone-upx-original"
     environment:
       CGO_ENABLED: 0
     when:
@@ -72,13 +72,20 @@ steps:
     pull: always
     image: golang:1.14
     commands:
-      - "go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/amd64/drone-upx"
+      - "go build -v -ldflags '-X main.version=${DRONE_TAG##v} -X main.build=${DRONE_BUILD_NUMBER}' -a -o release/linux/amd64/drone-upx-original"
     environment:
       CGO_ENABLED: 0
     when:
       event:
         - tag
 
+  - name : upx
+    image: cnbattle/drone-upx
+    settings:
+      level: 9
+      save_file: ./release/linux/amd64/drone-upx
+      original_file: ./release/linux/amd64/drone-upx-original
+
   - name: executable
     pull: always
     image: golang:1.14

cmd/cmd.go

@@ -6,19 +6,16 @@ import (
 	"os/exec"
 )
 
-// Cmd Cmd
+// Cmd exec.Command
 func Cmd(name string, arg ...string) {
-	fmt.Println(name, arg)
-	cmd0 := exec.Command(name, arg...)
-	var outputBuf1 bytes.Buffer
-	cmd0.Stdout = &outputBuf1
-	if err := cmd0.Start(); err != nil {
-		fmt.Printf("Error: The first command can not be startup %s\n", err)
-		return
+	command := exec.Command(name, arg...)
+	var buffer bytes.Buffer
+	command.Stdout = &buffer
+	if err := command.Start(); err != nil {
+		panic(fmt.Sprintf("Error: The first command can not be startup %s\n", err))
 	}
-	if err := cmd0.Wait(); err != nil {
-		fmt.Printf("Error: Couldn't wait for the second command: %s\n", err)
-		return
+	if err := command.Wait(); err != nil {
+		panic(fmt.Sprintf("Error: Couldn't wait for the second command: %s\n", err))
 	}
-	fmt.Printf("%s\n", outputBuf1.Bytes())
+	fmt.Printf("%s", buffer.Bytes())
 }

drone-upx.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"github.com/cnbattle/drone-upx/cmd"
 	"os"
 )
@@ -9,12 +10,14 @@ var (
 	level        string
 	saveFile     string
 	originalFile string
+	Version      string
 )
 
 func init() {
 	level = os.Getenv("PLUGIN_LEVEL")
 	saveFile = os.Getenv("PLUGIN_SAVE_FILE")
 	originalFile = os.Getenv("PLUGIN_ORIGINAL_FILE")
+	fmt.Println("Version:", Version)
 }
 
 func main() {