Change name of output_dir variable

.github/workflows/run-cluster.yaml

@@ -85,10 +85,10 @@ jobs:
         uv v
         source .venv/bin/activate
         uv pip install ray[default] boto3
-        output_dir=/tmp/outputs
-        mkdir -p $output_dir
-        echo "Output dir is set to $output_dir"
-        echo "output_dir=$output_dir" >> $GITHUB_OUTPUT
+        GHA_OUTPUT_DIR=/tmp/outputs
+        mkdir -p $GHA_OUTPUT_DIR
+        echo "Output dir is set to $GHA_OUTPUT_DIR"
+        echo "GHA_OUTPUT_DIR=$GHA_OUTPUT_DIR" >> $GITHUB_ENV
     - name: Dynamically update ray config file
       run: |
         source .venv/bin/activate
@@ -125,6 +125,7 @@ jobs:
           echo 'Invalid command submitted; command cannot be empty'
           exit 1
         fi
+        echo "Output dir: $GHA_OUTPUT_DIR"
         python .github/ci-scripts/job_runner.py \
           --working-dir='${{ inputs.working_dir }}' \
           --entrypoint-script='${{ inputs.entrypoint_script }}' \