ci(fix): move env definition

Author: bevzzz

.github/workflows/test.yaml

@@ -18,8 +18,6 @@ jobs:
   docker-cache:
     name: Cache shared Docker images
     runs-on: ubuntu-latest
-    env:
-      DOCKER_CACHE_KEY: docker-images-${{ env.IMG2VEC }}-${{ env.MINIO }}-${{ env.MODEL2VEC }}
     steps:
     - name: Login to Docker Hub
       if: ${{ !github.event.pull_request.head.repo.fork }}
@@ -29,6 +27,8 @@ jobs:
         password: ${{ secrets.DOCKER_PASSWORD }}
     - id: cache-check
       uses: actions/cache/restore@v4
+      env:
+        DOCKER_CACHE_KEY: docker-images-${{ env.IMG2VEC }}-${{ env.MINIO }}-${{ env.MODEL2VEC }}
       with:
         path: ${{ env.DOCKER_IMAGES_TAR }}
         key: ${{ env.DOCKER_CACHE_KEY }}
@@ -43,6 +43,8 @@ jobs:
     - name: Cache images
       if: steps.cache-check.outputs.cache-hit != 'true'
       uses: actions/cache/save@v4
+      env:
+        DOCKER_CACHE_KEY: docker-images-${{ env.IMG2VEC }}-${{ env.MINIO }}-${{ env.MODEL2VEC }}
       with:
         path: ${{ env.DOCKER_IMAGES_TAR }}
         key: ${{ env.DOCKER_CACHE_KEY }}
@@ -63,15 +65,15 @@ jobs:
     name: Test
     runs-on: ubuntu-latest
     needs: [ docker-cache, maven-cache]
-    env:
-      DOCKER_CACHE_KEY: docker-images-${{ env.IMG2VEC }}-${{ env.MINIO }}-${{ env.MODEL2VEC }}
     strategy:
       matrix:
         WEAVIATE_VERSION: ["1.32.0", "1.33.0"]
     steps:
     - uses: actions/checkout@v4
 
     - uses: actions/cache/restore@v4
+      env:
+        DOCKER_CACHE_KEY: docker-images-${{ env.IMG2VEC }}-${{ env.MINIO }}-${{ env.MODEL2VEC }}
       with:
         path: ${{ env.DOCKER_IMAGES_TAR }}
         key: ${{ env.DOCKER_CACHE_KEY }}