diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index a68433f..8a91731 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -6,7 +6,7 @@ on:
 jobs:
   check:
     if: ${{ !startsWith(github.event.head_commit.message, 'release:') }}
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - name: Check
         run: echo check
@@ -17,5 +17,27 @@ jobs:
         with:
           args: echo alpine
 
-      - name: Foo
-        run: echo '${{ toJson(steps.alpine) }}'
+      - name: Dump GitHub context
+        env:
+          GITHUB_CONTEXT: ${{ toJson(github) }}
+        run: echo "$GITHUB_CONTEXT"
+      - name: Dump job context
+        env:
+          JOB_CONTEXT: ${{ toJson(job) }}
+        run: echo "$JOB_CONTEXT"
+      - name: Dump steps context
+        env:
+          STEPS_CONTEXT: ${{ toJson(steps) }}
+        run: echo "$STEPS_CONTEXT"
+      - name: Dump runner context
+        env:
+          RUNNER_CONTEXT: ${{ toJson(runner) }}
+        run: echo "$RUNNER_CONTEXT"
+      - name: Dump strategy context
+        env:
+          STRATEGY_CONTEXT: ${{ toJson(strategy) }}
+        run: echo "$STRATEGY_CONTEXT"
+      - name: Dump matrix context
+        env:
+          MATRIX_CONTEXT: ${{ toJson(matrix) }}
+        run: echo "$MATRIX_CONTEXT"