Include healthcheck in Dockerfile

Dockerfile

@@ -5,6 +5,7 @@ USER app
 WORKDIR /app
 EXPOSE 8080
 EXPOSE 8081
+RUN apt-get update && apt-get install -y curl
 
 FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
 ARG BUILD_CONFIGURATION=Release
@@ -22,4 +23,5 @@ RUN dotnet publish "./WebApi.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:
 FROM base AS final
 WORKDIR /app
 COPY --from=publish /app/publish .
+HEALTHCHECK --interval=20s --timeout=1s --start-period=10s --retries=3 CMD curl --fail http://localhost:8080/health || exit 1
 ENTRYPOINT ["dotnet", "WebApi.dll"]