fix(ci): use Python container image instead of setup-python action

- Switch all jobs to use python:3.11-slim container
- Remove setup-python action (not cached on Forgejo runner)
- Add apt-get install for openssh-client and curl in SSH tunnel jobs
- Increased timeout for unit-tests to 10 minutes
- Remove unused PYTHON_VERSION env var

.forgejo/workflows/dspy-eval.yml

@@ -39,7 +39,6 @@ on:
     - cron: '0 2 * * *'
 
 env:
-  PYTHON_VERSION: '3.11'
   SERVER_IP: '91.98.224.44'
   SERVER_USER: 'root'
 
@@ -50,18 +49,16 @@ jobs:
   unit-tests:
     name: Layer 1 - Unit Tests
     runs-on: ubuntu-latest
-    timeout-minutes: 5
+    container:
+      image: python:3.11-slim
+    timeout-minutes: 10
     
     steps:
       - uses: https://github.com/actions/checkout@v4
       
-      - name: Set up Python
-        uses: https://github.com/actions/setup-python@v5
-        with:
-          python-version: ${{ env.PYTHON_VERSION }}
-      
       - name: Install dependencies
         run: |
+          pip install --upgrade pip
           pip install -e ".[dev]"
           pip install rapidfuzz
       
@@ -84,6 +81,8 @@ jobs:
   dspy-module-tests:
     name: Layer 2 - DSPy Module Tests
     runs-on: ubuntu-latest
+    container:
+      image: python:3.11-slim
     timeout-minutes: 20
     needs: unit-tests
     
@@ -93,13 +92,9 @@ jobs:
     steps:
       - uses: https://github.com/actions/checkout@v4
       
-      - name: Set up Python
-        uses: https://github.com/actions/setup-python@v5
-        with:
-          python-version: ${{ env.PYTHON_VERSION }}
-      
       - name: Install dependencies
         run: |
+          pip install --upgrade pip
           pip install -e ".[dev]"
           pip install dspy-ai httpx rapidfuzz litellm
       
@@ -124,19 +119,22 @@ jobs:
   integration-tests:
     name: Layer 3 - Integration Tests
     runs-on: ubuntu-latest
+    container:
+      image: python:3.11-slim
     timeout-minutes: 15
     needs: unit-tests
     
     steps:
       - uses: https://github.com/actions/checkout@v4
       
-      - name: Set up Python
-        uses: https://github.com/actions/setup-python@v5
-        with:
-          python-version: ${{ env.PYTHON_VERSION }}
-      
-      - name: Install dependencies
+      - name: Install system dependencies
         run: |
+          apt-get update
+          apt-get install -y openssh-client curl
+      
+      - name: Install Python dependencies
+        run: |
+          pip install --upgrade pip
           pip install -e ".[dev]"
           pip install httpx pytest-asyncio
       
@@ -188,6 +186,8 @@ jobs:
   comprehensive-eval:
     name: Layer 4 - Comprehensive Evaluation
     runs-on: ubuntu-latest
+    container:
+      image: python:3.11-slim
     timeout-minutes: 60
     needs: [unit-tests, dspy-module-tests, integration-tests]
     
@@ -197,13 +197,14 @@ jobs:
     steps:
       - uses: https://github.com/actions/checkout@v4
       
-      - name: Set up Python
-        uses: https://github.com/actions/setup-python@v5
-        with:
-          python-version: ${{ env.PYTHON_VERSION }}
-      
-      - name: Install dependencies
+      - name: Install system dependencies
         run: |
+          apt-get update
+          apt-get install -y openssh-client curl
+      
+      - name: Install Python dependencies
+        run: |
+          pip install --upgrade pip
           pip install -e ".[dev]"
           pip install dspy-ai httpx rapidfuzz pandas pytest-json-report litellm