Add nightly build to GitHub packages during main build

Signed-off-by: Pavel Abramov <[email protected]>

.github/workflows/main_ci.yml

@@ -19,3 +19,30 @@ jobs:
 
       - name: build and test
         uses: ./.github/actions/build-and-test
+
+  # publishing latest commit from master
+  publish-nighltly:
+    runs-on: ubuntu-latest
+    needs: build-and-test
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          push: true
+          tags: |
+            ghcr.io/uncledecart/nkvn:latest
+            ghcr.io/uncledecart/nkvn:${{ github.sha }}