fix: sync lock file and add PR build workflow

.gitea/workflows/pr.yml

@@ -0,0 +1,38 @@
+name: PR Build
+
+on:
+  pull_request:
+    branches:
+      - main
+
+env:
+  IMAGE_PR: git.sebse.de/${{ github.repository }}
+  IMAGE_MIGRATE_PR: git.sebse.de/${{ github.repository }}-migrate
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build app
+        uses: docker/build-push-action@v5
+        with:
+          context: ./web
+          push: false
+          tags: ${{ env.IMAGE_PR }}:pr-${{ github.event.pull_request.head.sha }}
+          cache-from: type=registry,ref=${{ env.IMAGE_PR }}:latest
+
+      - name: Build migrate
+        uses: docker/build-push-action@v5
+        with:
+          context: ./web
+          file: ./web/Dockerfile.migrate
+          push: false
+          tags: ${{ env.IMAGE_MIGRATE_PR }}:pr-${{ github.event.pull_request.head.sha }}
+          cache-from: type=registry,ref=${{ env.IMAGE_MIGRATE_PR }}:latest