feat(ci): add PR Docker build workflow for ghcr.io

Author: jollySleeper

.github/workflows/docker-build-pr.yml

@@ -0,0 +1,61 @@
+name: Docker Build PR
+
+on:
+  pull_request:
+    paths-ignore:
+      - "**.md"
+    branches:
+      - "**"
+
+jobs:
+  build-docker-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - uses: actions/checkout@v5
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: latest
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          cache: "pnpm"
+      - run: pnpm install
+      - run: pnpm build && ./localizefonts.sh && mv dist/ dist-ci/
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+        with:
+          platforms: all
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: latest
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository }}
+          tags: |
+            type=ref,event=pr
+            type=ref,event=branch
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile.ci
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max