ci: add build workflow (#389)

.github/workflows/build.yml

@@ -0,0 +1,31 @@
+name: Build apps and migration script
+
+on:
+  pull_request:
+    branches: ["*"]
+  push:
+    branches: ["main"]
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}
+
+env:
+  FORCE_COLOR: 3
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup
+        uses: ./tooling/github/setup
+
+      - name: Copy env
+        shell: bash
+        run: cp .env.example .env
+
+      - name: Build
+        run: pnpm build