# syntax=docker/dockerfile:1

# ---- build ----
FROM mcr.microsoft.com/dotnet/sdk:9.0-alpine AS build
WORKDIR /src
COPY ContactRelay.csproj .
RUN dotnet restore
COPY . .
RUN dotnet publish -c Release -o /app --no-restore

# ---- runtime ----
FROM mcr.microsoft.com/dotnet/aspnet:9.0-alpine AS final
WORKDIR /app
COPY --from=build /app .
# The .NET aspnet image ships a non-root `app` user.
USER app
ENV ASPNETCORE_URLS=http://+:8081 \
    DOTNET_EnableDiagnostics=0
EXPOSE 8081
HEALTHCHECK --interval=30s --timeout=3s --retries=3 \
  CMD wget -qO- http://localhost:8081/healthz || exit 1
ENTRYPOINT ["dotnet", "ContactRelay.dll"]