Dockerfile

# Build stage
FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
WORKDIR /src

# Copy csproj and restore dependencies
COPY *.csproj ./
RUN dotnet restore

# Copy source and build
COPY . .
RUN dotnet publish MulttenantSaas.csproj -c Release -o /app/publish --no-restore

# Runtime stage
FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS runtime
WORKDIR /app

# Create non-root user for security
RUN adduser --disabled-password --gecos '' appuser

# Copy published app
COPY --from=build /app/publish .

# Set environment
ENV ASPNETCORE_URLS=http://+:8080
ENV ASPNETCORE_ENVIRONMENT=Production

# Switch to non-root user
USER appuser

EXPOSE 8080

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD curl -f http://localhost:8080/health || exit 1

ENTRYPOINT ["dotnet", "MulttenantSaas.dll"]