chore: release docker image on ghcr.io, thanks to @kevinastone

.github/workflows/container_image.yaml

@@ -0,0 +1,48 @@
+name: Build Container Image
+
+# Controls when the workflow will run
+on:
+  workflow_dispatch:
+  push:
+    branches: [master]
+    tags: [v*]
+  release:
+    types: [published]
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      # Get the repository's code
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # Generate docker tags
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/tn1ck/super-sudoku
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}