[release only] Docker build - Setup release specific variables (#109809)

Author: atalman

.github/workflows/docker-release.yml

@@ -82,12 +82,10 @@ jobs:
           echo "${RUNNER_TEMP}/bin" >> "${GITHUB_PATH}"
           # Generate PyTorch version to use
           echo "PYTORCH_VERSION=$(python3 .github/scripts/generate_pytorch_version.py)" >> "${GITHUB_ENV}"
-      - name: Setup nightly specific variables
-        if: ${{ github.event.ref == 'refs/heads/nightly' || startsWith(github.event.ref, 'refs/tags/ciflow/nightly/') }}
+      - name: Setup release specific variables
         run: |
           {
-            echo "DOCKER_IMAGE=pytorch-nightly";
-            echo "INSTALL_CHANNEL=pytorch-nightly";
+            echo "INSTALL_CHANNEL=pytorch-test";
             echo "TRITON_VERSION=$(cut -f 1 .ci/docker/triton_version.txt)+$(cut -c -10 .ci/docker/ci_commit_pins/triton.txt)";
           } >> "${GITHUB_ENV}"
       - name: Run docker build / push