ci: add workflow to publish stable versions (#2655)

.github/workflows/publish-stable.yml

@@ -0,0 +1,26 @@
+name: Publish Stable
+
+on:
+  workflow_dispatch:
+
+jobs:
+  PublishSkyra:
+    name: Publish Skyra image to container registries
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Project
+        uses: actions/checkout@v4
+      - name: Setup Docker Buildx
+        uses: docker/[email protected]
+      - name: Login to GitHub Container Registry
+        uses: docker/[email protected]
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push Skyra Docker image
+        uses: docker/[email protected]
+        with:
+          push: true
+          context: .
+          tags: ghcr.io/skyra-project/skyra:stable