feat(gemini): add version info

.github/workflows/go.yml

@@ -12,8 +12,17 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name:
-        uses: actions/checkout@v2
-
+        uses: actions/checkout@v3
+      - name: Pull tags and refs
+        run: git fetch --prune --unshallow
+      - name: Check if version is updated
+        run: |
+          export ExpectedVersion=$(git describe --tags --abbrev=0)
+          export DefinedVersion=$(cat cmd/gemini/Version)
+          if [ "$ExpectedVersion" != "$DefinedVersion" ]; then 
+            echo "Expect to have '$ExpectedVersion', but got '$DefinedVersion'"
+            exit 1
+          fi
       - name: Setup Go
         uses: actions/setup-go@v2
         with:

cmd/gemini/Version

@@ -0,0 +1 @@
+v1.8.3

cmd/gemini/main.go

@@ -14,14 +14,19 @@
 package main
 
 import (
+	_ "embed"
 	"fmt"
 	"os"
+	"runtime/debug"
 )
 
+//go:generate sh -c "git describe --tags --abbrev=0 | tr -d '\n' > ./Version"
+//go:embed Version
+var version string
+
 var (
-	commit  = "none"
-	version = "dev"
-	date    = "unknown"
+	commit = "none"
+	date   = "unknown"
 )
 
 func main() {
@@ -30,3 +35,16 @@ func main() {
 		os.Exit(1)
 	}
 }
+
+func init() {
+	if info, ok := debug.ReadBuildInfo(); ok {
+		for _, setting := range info.Settings {
+			switch setting.Key {
+			case "vcs.revision":
+				commit = setting.Value
+			case "vcs.time":
+				date = setting.Value
+			}
+		}
+	}
+}