The app maps health checks at /health (ServiceDefaults), not /api/v1/health.
Compose healthcheck and deploy-qa.sh's wait-loop both hit the wrong path.
Also add an nginx location for /health since it lives outside the /api
prefix that the admin proxy otherwise forwards unchanged.
aspnet base image ships neither curl nor wget, so the compose
healthcheck's wget call failed silently at the exec level (visible only
in docker's health-check log, not app stdout). Install curl in the
Dockerfile.ci final stage and switch the healthcheck to use it.