add funnel into workflow as TES instance is required for tests

.github/workflows/code_test.yaml

@@ -10,15 +10,43 @@ on:
       - main
 
 jobs:
+  common-steps:
+    name: common setup steps
+    runs-on: ubuntu-latest
+    outputs:
+      rust-toolchain: ${{ steps.set-toolchain.outputs.version }}
+    steps:
+      - name: Stop existing Funnel container if running
+        run: |
+          docker stop $(docker ps -q --filter ancestor=ohsucompbio/funnel:latest) || true
+        shell: bash
+
+      - name: Start Funnel
+        run: |
+          docker run -d -p 8000:8000 ohsucompbio/funnel:latest \
+          server run --Server.HostName=localhost --Server.HTTPPort=8000
+        shell: bash
+
+      - name: Wait for Funnel to be healthy
+        run: |
+          until curl --fail http://localhost:8000/v1/tasks; do
+            echo "Waiting for Funnel to be healthy..."
+            sleep 3
+          done
+        shell: bash
+
   integration-tests:
     name: Run integration tests
     runs-on: ubuntu-latest
+    needs: common-steps
     steps:
       - name: Check out repository
         uses: actions/checkout@v4
 
       - name: Install rust toolchain
         uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: stable
 
       - name: Run integration tests
         run: cargo test --tests
@@ -42,12 +70,20 @@ jobs:
   unit-tests:
     name: Run unit tests
     runs-on: ubuntu-latest
+    container:
+      image: rust:latest 
+    needs: common-steps
     steps:
       - name: Check out repository
         uses: actions/checkout@v4
 
       - name: Install rust toolchain
         uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: stable
+
+      - name: Install cargo-tarpaulin
+        run: cargo install cargo-tarpaulin
 
       - name: Run unit tests
         run: cargo test --lib