add versioning and github actions

Author: gardenerik

.github/workflows/build.yml

@@ -0,0 +1,55 @@
+on:
+  push:
+    tags:
+      - "*"
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-go:
+    permissions:
+      contents: write
+      packages: write
+    name: release linux/amd64
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: ncipollo/release-action@v1
+    - uses: wangyoucao577/go-release-action@v1
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        goos: linux
+        goarch: amd64
+
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

bumpver.toml

@@ -0,0 +1,15 @@
+[bumpver]
+current_version = "2023.99"
+version_pattern = "YYYY.INC1"
+commit_message = "🎉 Release {new_version}"
+commit = true
+tag = true
+push = true
+
+[bumpver.file_patterns]
+"pkg/version.go" = [
+    'const VERSION = "{version}"',
+]
+"bumpver.toml" = [
+    'current_version = "{version}"',
+]

main.go

@@ -6,6 +6,8 @@ import (
 )
 
 func main() {
+	log.Printf("Letter v.%v\n", pkg.VERSION)
+
 	r := pkg.NewRouter()
 	err := r.Run()
 	if err != nil {

pkg/version.go

@@ -0,0 +1,3 @@
+package pkg
+
+const VERSION = "2023.99"