Add PHP 8.4 base image with build workflow

.gitea/workflows/build-php-8.4.yaml

@@ -0,0 +1,54 @@
+name: Build and Push Chill base image
+
+on:
+  push:
+  workflow_dispatch:
+
+jobs:
+  build-and-push:
+    runs-on: cth-ubuntu-latest
+
+    env:
+      IMAGE_NAME: chill/base-image
+      IMAGE_FLAVOR: 8.4
+      CONTEXT: php/8.4
+
+    steps:
+      - name: Checkout code
+        uses: https://github.com/actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: https://github.com/docker/setup-buildx-action@v3
+
+      - name: Log in to Docker hub
+        uses: https://github.com/docker/login-action@v3
+        with:
+          username: ${{ vars.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            ${{ IMAGE_NAME }}
+          flavor: |
+            prefix=${{ env.IMAGE_FLAVOR }}
+          tags: |
+            type=schedule
+            type=edge
+
+      - name: Debug metadata
+        run: |
+          echo "Tags: ${{ steps.meta.outputs.tags }}"
+          echo "Labels: ${{ steps.meta.outputs.labels }}"
+
+      - name: Build and push
+        id: build-push
+        uses: https://github.com/docker/build-push-action@v5
+        with:
+          context: php/8.4
+          file: Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}