add release pipeline

Author: JohannesHepp

.github/workflows/release.yml

@@ -0,0 +1,42 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log into GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract version from tag
+        id: version
+        run: |
+          VERSION=$(echo $GITHUB_REF | sed -nE 's!refs/tags/v?!!p')
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ghcr.io/${{ github.repository }}:${{ steps.version.outputs.VERSION }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

README.md

@@ -46,7 +46,7 @@ This container provides a comprehensive toolkit for debugging networking issues,
 ## Quick Start
 
 ```bash
-kubectl run debug-session --rm -i --tty --image=schwarzit/stackit-debug-container:latest
+kubectl run debug-session --rm -i --tty --image=ghcr.io/stackitcloud/stackit-debug-container:latest
 ```
 
 ## Security Features