ci: simplify external provider integration test (#2050)

Do not run Ollama, but only validate that the provider was loaded by the
server.

Signed-off-by: Sébastien Han <seb@redhat.com>

.github/workflows/test-external-providers.yml

@@ -30,18 +30,6 @@ jobs:
         with:
           python-version: "3.10"
 
-      - name: Install Ollama
-        run: |
-          curl -fsSL https://ollama.com/install.sh | sh
-
-      - name: Pull Ollama image
-        run: |
-          ollama pull llama3.2:3b-instruct-fp16
-
-      - name: Start Ollama in background
-        run: |
-          nohup ollama run llama3.2:3b-instruct-fp16 --keepalive=30m > ollama.log 2>&1 &
-
       - name: Set Up Environment and Install Dependencies
         run: |
           uv sync --extra dev --extra test
@@ -66,21 +54,6 @@ jobs:
         run: |
           USE_COPY_NOT_MOUNT=true LLAMA_STACK_DIR=. uv run llama stack build --config tests/external-provider/llama-stack-provider-ollama/custom-distro.yaml
 
-      - name: Wait for Ollama to start
-        run: |
-          echo "Waiting for Ollama..."
-          for i in {1..30}; do
-            if curl -s http://localhost:11434 | grep -q "Ollama is running"; then
-              echo "Ollama is running!"
-              exit 0
-            fi
-            sleep 1
-          done
-          echo "Ollama failed to start"
-          ollama ps
-          ollama.log
-          exit 1
-
       - name: Start Llama Stack server in background
         if: ${{ matrix.image-type }} == 'venv'
         env:
@@ -92,24 +65,14 @@ jobs:
 
       - name: Wait for Llama Stack server to be ready
         run: |
-          echo "Waiting for Llama Stack server..."
           for i in {1..30}; do
-            if curl -s http://localhost:8321/v1/health | grep -q "OK"; then
-              echo "Llama Stack server is up!"
-              if grep -q "remote::custom_ollama from /tmp/providers.d/remote/inference/custom_ollama.yaml" server.log; then
-                echo "Llama Stack server is using custom Ollama provider"
-                exit 0
-              else
-                echo "Llama Stack server is not using custom Ollama provider"
-                exit 1
-              fi
+            if ! grep -q "remote::custom_ollama from /tmp/providers.d/remote/inference/custom_ollama.yaml" server.log; then
+              echo "Waiting for Llama Stack server to load the provider..."
+              sleep 1
+            else
+              echo "Provider loaded"
+              exit 0
             fi
-            sleep 1
           done
-          echo "Llama Stack server failed to start"
-          cat server.log
+          echo "Provider failed to load"
           exit 1
-
-      - name: run inference tests
-        run: |
-          uv run pytest -v tests/integration/inference/test_text_inference.py --stack-config="http://localhost:8321" --text-model="meta-llama/Llama-3.2-3B-Instruct" --embedding-model=all-MiniLM-L6-v2