Optimize binary size

.github/workflows/go.yml

@@ -0,0 +1,47 @@
+name: Go
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: 1.20.5
+      - name: Cache
+        uses: actions/cache@v3
+        with:
+          path: |
+            /home/runner/.cache/go-build/
+            /home/runner/go/pkg/mod/
+          key: GO_MOD_CACHE
+      - name: Requirements
+        run: sudo apt-get install upx-ucl
+      - name: Build
+        run: ./build.sh
+      - name: Upload a Build Artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: build_artifacts
+          path: |
+            ws
+  push:
+    needs: build
+    if: github.ref == 'refs/heads/master'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Download Artifacts
+        uses: actions/download-artifact@v3
+        with:
+          name: build_artifacts
+      - name: Draft new release and upload assets
+        env: 
+          GH_TOKEN: ${{ secrets.ACTION_TOKEN }}
+        run: |
+          gh release create "$(git branch --show-current)-$(git rev-parse --short HEAD)" ./ws

build.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+CGO_ENABLED=0 go build -buildvcs=false -trimpath -ldflags="-s -w -X main.version=$(git branch --show-current)-$(git rev-parse --short HEAD)" .
+upx -qqq --best ws

main.go

@@ -15,7 +15,7 @@ import (
 )
 
 // Version is app version
-const Version = "0.2.3"
+var version = ""
 
 var options struct {
 	origin       string
@@ -31,7 +31,7 @@ var options struct {
 func main() {
 	rootCmd := &cobra.Command{
 		Use:   "ws URL",
-		Short: fmt.Sprintf("ws is a websocket client v.%s", Version),
+		Short: fmt.Sprintf("ws is a websocket client v.%s", version),
 		Run:   root,
 	}
 	rootCmd.Flags().StringVarP(&options.origin, "origin", "o", "", "websocket origin")
@@ -48,7 +48,7 @@ func main() {
 
 func root(cmd *cobra.Command, args []string) {
 	if options.printVersion {
-		fmt.Printf("ws v.%s\n", Version)
+		fmt.Printf("ws v.%s\n", version)
 		os.Exit(0)
 	}