In-process tests, optional dockerized validation node

.github/workflows/checks.yaml

@@ -23,6 +23,7 @@ jobs:
           - nightly
         features:
           - ""
+
     steps:
       - name: Checkout sources
         uses: actions/checkout@v4
@@ -66,13 +67,10 @@ jobs:
       - name: Compile op-rbuilder
         run: cargo build -p op-rbuilder --bin op-rbuilder
 
-      - name: Download op-reth
-        run: |
-          ./scripts/ci/download-op-reth.sh
-          echo "$(pwd)" >> $GITHUB_PATH
-
       - name: Lint
         run: make lint
 
       - name: Test
         run: make test
+        env:
+          TESTS_TEMP_DIR: ${{ github.workspace }}