impl: show version on login page

Author: TheDevMinerTV

.dockerignore

@@ -1,4 +1,3 @@
-.git
 .github
 node_modules
 docs

.github/workflows/docker.yml

@@ -60,6 +60,7 @@ jobs:
       - name: Build and push Docker image
         uses: docker/build-push-action@v5
         with:
+          context: .
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -19,8 +19,14 @@ COPY ./go.sum .
 RUN go mod download
 
 COPY . .
+
 COPY --from=frontend-builder /build/internal/web/static/styles.css /build/internal/web/static/styles.css
-RUN CGO_ENABLED=0 go build -o /build/ldap-passwd
+RUN \
+  PACKAGE="github.com/netresearch/ldap-manager/internal" && \
+  VERSION="$(git describe --tags --always --abbrev=0 --match='v[0-9]*.[0-9]*.[0-9]*' 2> /dev/null | sed 's/^.//')" && \
+  COMMIT_HASH="$(git rev-parse --short HEAD)" && \
+  BUILD_TIMESTAMP=$(date '+%Y-%m-%dT%H:%M:%S') && \
+  CGO_ENABLED=0 go build -o /build/ldap-passwd -ldflags="-s -w -X '${PACKAGE}.Version=${VERSION}' -X '${PACKAGE}.CommitHash=${COMMIT_HASH}' -X '${PACKAGE}.BuildTimestamp=${BUILD_TIMESTAMP}'"
 
 FROM alpine:3 AS runner
 

internal/build.go

@@ -0,0 +1,17 @@
+package internal
+
+import "fmt"
+
+var (
+	Version        = "dev"
+	CommitHash     = "n/a"
+	BuildTimestamp = "n/a"
+)
+
+func FormatVersion() string {
+	if Version == "dev" {
+		return "Development version"
+	}
+
+	return fmt.Sprintf("%s (%s, built at %s)", Version, CommitHash, BuildTimestamp)
+}

internal/web/auth.go

@@ -2,6 +2,7 @@ package web
 
 import (
 	"github.com/gofiber/fiber/v2"
+	"github.com/netresearch/ldap-manager/internal"
 	"github.com/rs/zerolog/log"
 )
 
@@ -54,5 +55,6 @@ func (a *App) loginHandler(c *fiber.Ctx) error {
 		"title":       "Login",
 		"headscripts": "",
 		"flashes":     []Flash{},
+		"version":     internal.FormatVersion(),
 	}, "layouts/base")
 }

internal/web/views/login.html

@@ -35,13 +35,18 @@
     Login
   </button>
 
-  <p class="text-center text-xs text-gray-500">
-    Powered by
-    <a
-      href="https://github.com/netresearch/ldap-manager"
-      class="break-keep outline-none transition-colors hocus:text-white hocus:underline hocus:decoration-white"
-    >
-      netresearch/ldap-manager
-    </a>
-  </p>
+  <div class="text-center text-xs text-gray-500">
+    <p>
+      Powered by
+
+      <a
+        href="https://github.com/netresearch/ldap-manager"
+        class="break-keep outline-none transition-colors hocus:text-white hocus:underline hocus:decoration-white"
+      >
+        netresearch/ldap-manager
+      </a>
+    </p>
+
+    <p>{{ .version }}</p>
+  </div>
 </form>

main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"os"
 
+	"github.com/netresearch/ldap-manager/internal"
 	"github.com/netresearch/ldap-manager/internal/options"
 	"github.com/netresearch/ldap-manager/internal/web"
 	"github.com/rs/zerolog"
@@ -12,6 +13,8 @@ import (
 func main() {
 	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
 
+	log.Info().Msgf("LDAP Manager %s starting...", internal.FormatVersion())
+
 	opts := options.Parse()
 	log.Logger = log.Logger.Level(opts.LogLevel)