added workflows

Author: zxpower

.github/workflows/build-image.yaml

@@ -0,0 +1,66 @@
+name: Image Build
+on:
+  workflow_call:
+
+jobs:
+  build-image:
+    name: Build and push Docker image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            digiblink/alpine-nginx-php-fpm
+            ghcr.io/digiblink/alpine-nginx-php-fpm
+          tags: |
+            type=sha
+            type=ref,event=tag
+            type=raw,value=latest,enable={{is_default_branch}}
+          flavor: |
+            latest=auto
+            prefix=,onlatest=false
+            suffix=
+          labels: |
+            org.opencontainers.image.vendor=digiBlink
+            org.opencontainers.image.source=https://github.com/${{ env.REPO_NAME }}
+            org.opencontainers.image.title=Alpine based image with latest PHP 8.4 FPM and Nginx
+            org.opencontainers.image.description=Alpine based image with latest PHP 8.4 FPM and Nginx
+            org.opencontainers.image.created=${{ steps.time.outputs.time }}
+            org.opencontainers.image.revision=${{ steps.short-sha.outputs.sha }}
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      
+      - name: Login to Docker Hub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          username: ${{ vars.DH_USER }}
+          password: ${{ secrets.DH_PAT }}
+
+      - name: Login to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build image and push to GitHub Container Registry
+        uses: docker/build-push-action@v6
+        with:
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}

.github/workflows/trigger-main-tag.yaml

@@ -0,0 +1,13 @@
+name: Trigger on Merge to Main / Tag
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - '*'
+
+jobs:
+  build-image:
+    uses: ./.github/workflows/build-image.yaml
+    secrets: inherit

.github/workflows/trigger-pr.yaml

@@ -0,0 +1,13 @@
+name: Trigger on PR
+
+on:
+  pull_request:
+
+concurrency:
+  group: ${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build-image:
+    uses: ./.github/workflows/build-image.yaml
+    secrets: inherit