ci: enable github actions

.github/workflows/release-build.yml

@@ -0,0 +1,41 @@
+name: Release Build
+on:
+  push:
+    branches:
+      - 'main'
+      - 'releases/**'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.job }}-${{ github.ref }}-build
+  cancel-in-progress: true
+
+jobs:
+  push_to_registry:
+    name: Docker Image to GitHub Packages
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          file: Dockerfile
+          context: .
+          push: true
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          tags: |
+            ghcr.io/${{ github.repository }}:dev