Run deployment tests in .NET SDK container

.gitea/scripts/deploy-environment.sh

@@ -32,7 +32,12 @@ docker builder prune -af || true
 docker system df
 df -h
 
-dotnet test api/QuestionsApi.Tests/QuestionsApi.Tests.csproj -c Release
+docker run --rm \
+  --volume "${PWD}:/src" \
+  --workdir /src \
+  --env DOTNET_CLI_TELEMETRY_OPTOUT=1 \
+  mcr.microsoft.com/dotnet/sdk:8.0 \
+  dotnet test api/QuestionsApi.Tests/QuestionsApi.Tests.csproj -c Release
 docker build --build-arg BUILD_REVISION="${BUILD_TAG}" -t "${API_IMAGE}" api/QuestionsApi
 docker build \
   --build-arg BUILD_REVISION="${BUILD_TAG}" \
@@ -68,4 +73,3 @@ kubectl rollout status deployment/step3-web -n "${KUBE_NAMESPACE}" --timeout=240
 kubectl get --raw "/api/v1/namespaces/${KUBE_NAMESPACE}/services/step3-web:http/proxy/healthz" >/dev/null
 
 echo "Deployed ${DEPLOYMENT_ENVIRONMENT} revision ${BUILD_TAG}."
-