ci: run long tests nightly

.github/workflows/nightly-tests.yml

@@ -0,0 +1,34 @@
+name: ci
+
+on:
+  schedule:
+    - cron:  '0 3 * * *'
+  workflow_dispatch:
+
+env:
+  GOPROXY: https://proxy.golang.org/
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    strategy:
+      fail-fast: false
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Unshallow
+        run: git fetch --prune --unshallow
+      -
+        name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version-file: ".go-version"
+      -
+        name: Go mod download
+        run: go mod download -x
+      -
+        name: Run long tests
+        run: go test -timeout=30m -tags=longtest ./...