ci: Add version bumping and Docker tag release workflow

.github/workflows/docker-publish.yaml

@@ -3,6 +3,7 @@ name: Build and Push Docker Image
 on:
   push:
     branches: [ "main" ]
+    tags: [ 'v*.*.*' ]
   pull_request:
 
 jobs:
@@ -33,4 +34,6 @@ jobs:
           context: .
           push: true
           platforms: linux/amd64,linux/arm64
-          tags: ${{ secrets.DOCKER_HUB_USERNAME }}/kubebadges:latest
+          tags: |
+            ${{ secrets.DOCKER_HUB_USERNAME }}/kubebadges:latest
+            ${{ secrets.DOCKER_HUB_USERNAME }}/kubebadges:${{ github.ref_name }}

.github/workflows/version-bump.yaml

@@ -0,0 +1,21 @@
+name: Bump version
+on:
+  push:
+    branches:
+      - main
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Bump version and push tag
+        id: tag_version
+        uses: mathieudutour/[email protected]
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Create a GitHub release
+        uses: ncipollo/release-action@v1
+        with:
+          tag: ${{ steps.tag_version.outputs.new_tag }}
+          name: Release ${{ steps.tag_version.outputs.new_tag }}
+          body: ${{ steps.tag_version.outputs.changelog }}