Add Linux workflow for testing with Cosmos DB emulator docker container (current and vnext)

.github/workflows/linux-cosmos-emulator-test.yml

@@ -0,0 +1,68 @@
+name: Linux .NET test with Cosmos DB Emulator
+on:
+  workflow_dispatch:
+  pull_request:
+    branches: [ "main" ]
+    paths:
+      - 'Extensions/Cosmos/**'
+      - '.github/workflows/linux-cosmos-emulator-test.yml'
+
+jobs:
+  cosmos_tests_linux:
+    name: Run Cosmos .NET unit tests on Linux
+    runs-on: ubuntu-latest
+    services:
+      cosmos-emulator:
+        image: mcr.microsoft.com/cosmosdb/linux/azure-cosmos-emulator:latest
+        ports:
+          - 8081:8081
+          - 10251:10251
+          - 10252:10252
+          - 10253:10253
+          - 10254:10254
+        env:
+          AZURE_COSMOS_EMULATOR_PARTITION_COUNT: 10
+          AZURE_COSMOS_EMULATOR_ENABLE_DATA_PERSISTENCE: false
+          AZURE_COSMOS_EMULATOR_IP_ADDRESS_OVERRIDE: 127.0.0.1
+        options: >-
+          --health-cmd="curl -f -k https://127.0.0.1:8081/_explorer/emulator.pem || exit 1"
+          --health-interval=30s
+          --health-timeout=10s
+          --health-retries=10
+    steps:
+      - name: Checkout (GitHub)
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: 8.0.x
+
+      - name: Restore dependencies
+        run: dotnet restore
+
+      - name: Build
+        run: dotnet build --no-restore
+
+      - name: Wait for Cosmos Emulator
+        run: |
+          echo "Waiting for Cosmos DB Emulator to be ready..."
+          timeout 300 bash -c 'until curl -f -k https://127.0.0.1:8081/_explorer/emulator.pem; do sleep 5; done'
+          echo "Cosmos DB Emulator is ready!"
+
+      - name: Import Cosmos Emulator Certificate
+        run: |
+          curl -k https://127.0.0.1:8081/_explorer/emulator.pem > ~/emulatorcert.crt
+          sudo cp ~/emulatorcert.crt /usr/local/share/ca-certificates/
+          sudo update-ca-certificates
+
+      - name: Run Cosmos Extension Tests
+        run: |
+          echo "Running Cosmos extension unit tests with emulator connection..."
+          echo "Cosmos_Endpoint: $Cosmos_Endpoint"
+          echo "Testing connectivity to emulator..."
+          curl -k -s https://127.0.0.1:8081/_explorer/index.html > /dev/null && echo "Emulator is responding" || echo "Warning: Emulator may not be fully ready"
+          dotnet test ./Extensions/Cosmos/Cosmos.DataTransfer.CosmosExtension.UnitTests/ --no-build --verbosity normal
+        env:
+          Cosmos_Endpoint: https://127.0.0.1:8081/
+          Cosmos_Key: C2y6yDjf5/R+ob0N8A7Cgv30VRDJIWEHLM+4QDU5DE2nQ9nDuVTqobD4b8mGGyPMbIZnqyMsEcaGQy67XIw/Jw==