🔄 created local '.github/workflows/build_docker_nightly.yml' from rem…

…ote 'template_workflows/build_docker_nightly.yml' (#343)

Co-authored-by: surchs <null>

.github/workflows/build_docker_nightly.yml

@@ -0,0 +1,31 @@
+name: build docker nightly
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ secrets.DOCKERHUB_USERNAME }}/${{ vars.DOCKERHUB_REPO }}:nightly