fix: GitHub Action run-experiment (#33)

Author: yoomlam

.github/workflows/run-experiment.yml

@@ -23,9 +23,13 @@ jobs:
 
     - name: Run experiment
       shell: bash
-      env:
-        DEPLOYED_PHOENIX_URL: ${{ secrets.DEPLOYED_PHOENIX_URL }}
-        DEPLOYED_PHOENIX_API_KEY: ${{ secrets.DEPLOYED_PHOENIX_API_KEY }}
-        DEPLOYED_API_URL: ${{ secrets.DEPLOYED_API_URL }}
+      working-directory: ./app
       run: |
+        # Create override.env file used by Docker image
+        {
+          echo "DEPLOYED_PHOENIX_URL=${{ secrets.DEPLOYED_PHOENIX_URL }}"
+          echo "DEPLOYED_PHOENIX_API_KEY=${{ secrets.DEPLOYED_PHOENIX_API_KEY }}"
+          echo "DEPLOYED_API_URL=${{ secrets.DEPLOYED_API_URL }}"
+        } >> override.env
+
         make run-experiment DATASET="${{ github.event.inputs.dataset_name }}" PIPELINE="${{ github.event.inputs.pipeline_name }}" ACTION="run_on_deployed"