Add GitHub Action to build image

.github/workflows/ngrok-caddy.yml

@@ -0,0 +1,43 @@
+name: Docker Image Ngrok-Caddy
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 6 * * *" # 6 am Daily
+  push:
+    branches:
+      - main
+    paths:
+      - caddy-ngrok/**
+      - .github/workflows/ngrok-caddy.yml
+
+jobs:
+  ngrok-caddy:
+    name: NGrok Caddy
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: docker/setup-qemu-action@v3
+      - uses: docker/setup-buildx-action@v3
+
+      - name: Login to Github Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+        if: ${{ !env.ACT }}
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+        if: ${{ !env.ACT }}
+
+      - uses: docker/build-push-action@v3
+        with:
+          context: dnsmasq
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.ref == 'refs/heads/main' && !env.ACT }}
+          tags: ghcr.io/${{ github.repository_owner }}/caddy-ngrok:latest, wardenenv/caddy-ngrok:latest