From a16fda6938bf86f5d0fa9528da552bb7cb87f036 Mon Sep 17 00:00:00 2001
From: Stuart Douglas <stuart.w.douglas@gmail.com>
Date: Mon, 16 Dec 2024 17:35:45 +1100
Subject: [PATCH] feat: only load docker when needed

---
 .github/actions/build-cache/action.yml | 6 ++++++
 .github/workflows/ci.yml               | 7 +++++++
 2 files changed, 13 insertions(+)

diff --git a/.github/actions/build-cache/action.yml b/.github/actions/build-cache/action.yml
index a6635d4a93..f69201aeb4 100644
--- a/.github/actions/build-cache/action.yml
+++ b/.github/actions/build-cache/action.yml
@@ -1,5 +1,10 @@
 name: Build Cache
 description: Cache builds
+inputs:
+  docker:
+    description: If the test should load docker images
+    required: false
+    default: false
 runs:
   using: "composite"
   # Make sure to keep these cache entries in sync with those in writecache.yml
@@ -14,6 +19,7 @@ runs:
         echo "hash=$hash" >> "$GITHUB_OUTPUT"
     - name: Restore Hermit Cache
       uses: actions/cache/restore@v4
+      if: inputs.docker == 'true'
       with:
         path: ${{ runner.os == 'macOS' && '~/Library/Caches/hermit/pkg' || '~/.cache/hermit/pkg' }}
         key: ${{ runner.os }}-hermit-cache-${{ steps.bin-hash.outputs.hash }}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a0a7c10b4c..1a629e8818 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -267,8 +267,15 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
+      - name: Check if Docker Required
+        id: check-docker
+        run: |
+          result="$(git grep -E '//ftl:subscribe|DefaultPostgresDatabaseConfig|DefaultMySQLDatabaseConfig' -- $(git grep -l '^//go:build integration' | xargs grep -l '^func TestPubSub' | xargs -I {} dirname ./{})/testdata || true)"
+          echo "docker_req=$result" >> $GITHUB_ENV
       - name: Build Cache
         uses: ./.github/actions/build-cache
+        with:
+          docker: ${{ env.result != ''}}
       - name: Init Hermit
         uses: cashapp/activate-hermit@v1.1.3
       - name: Docker Compose