[SPARK-58302][INFRA] Remove the unused dev/infra/Dockerfile base image

.github/workflows/build_and_test.yml

@@ -70,7 +70,6 @@ jobs:
       required: ${{ steps.set-outputs.outputs.required }}
       # Pinned so every downstream job checks out the same snapshot, even if `master` advances mid-run.
       head_sha: ${{ steps.resolve-sha.outputs.head_sha }}
-      image_url: ${{ steps.infra-image-outputs.outputs.image_url }}
       image_docs_url: ${{ steps.infra-image-docs-outputs.outputs.image_docs_url }}
       image_docs_url_link: ${{ steps.infra-image-link.outputs.image_docs_url_link }}
       image_lint_url: ${{ steps.infra-image-lint-outputs.outputs.image_lint_url }}
@@ -204,14 +203,6 @@ jobs:
             exit 1
           fi
         fi
-    - name: Generate infra image URL
-      id: infra-image-outputs
-      run: |
-        # Convert to lowercase to meet Docker repo name requirement
-        REPO_OWNER=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')
-        IMG_NAME="apache-spark-ci-image:${{ inputs.branch }}-${{ github.run_id }}"
-        IMG_URL="ghcr.io/$REPO_OWNER/$IMG_NAME"
-        echo "image_url=$IMG_URL" >> $GITHUB_OUTPUT
     - name: Generate infra image URL (Documentation)
       id: infra-image-docs-outputs
       run: |

.github/workflows/build_infra_images_cache.yml

@@ -33,7 +33,6 @@ on:
     - 'master'
     - 'branch-*'
     paths:
-    - 'dev/infra/Dockerfile'
     - 'dev/spark-test-image/docs/Dockerfile'
     - 'dev/spark-test-image/lint/Dockerfile'
     - 'dev/spark-test-image/sparkr/Dockerfile'
@@ -69,18 +68,6 @@ jobs:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
-      - name: Build and push
-        id: docker_build
-        continue-on-error: true
-        uses: docker/build-push-action@bcafcacb16a39f128d818304e6c9c0c18556b85f
-        with:
-          context: ./dev/infra/
-          push: true
-          tags: ghcr.io/apache/spark/apache-spark-github-action-image-cache:${{ github.ref_name }}-static
-          cache-from: type=registry,ref=ghcr.io/apache/spark/apache-spark-github-action-image-cache:${{ github.ref_name }}
-          cache-to: type=registry,ref=ghcr.io/apache/spark/apache-spark-github-action-image-cache:${{ github.ref_name }},mode=max
-      - name: Image digest
-        run: echo ${{ steps.docker_build.outputs.digest }}
       - name: Build and push (Documentation)
         if: hashFiles('dev/spark-test-image/docs/Dockerfile') != ''
         id: docker_build_docs
@@ -255,7 +242,6 @@ jobs:
               status=1
             fi
           }
-          check "base"                            "${{ steps.docker_build.outcome }}"
           check "docs"                            "${{ steps.docker_build_docs.outcome }}"
           check "lint"                            "${{ steps.docker_build_lint.outcome }}"
           check "sparkr"                          "${{ steps.docker_build_sparkr.outcome }}"