Implement Docker support with Dockerfile, docker-compose, and nginx configuration; add HTTPS redirection option and update appsettings

Dockerfile

@@ -0,0 +1,26 @@
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
+WORKDIR /src
+
+COPY ["WorkTracker.csproj", "./"]
+RUN dotnet restore "WorkTracker.csproj"
+
+COPY . .
+RUN dotnet publish "WorkTracker.csproj" -c Release -o /app/publish /p:UseAppHost=false
+
+FROM mcr.microsoft.com/dotnet/aspnet:9.0 AS final
+WORKDIR /app
+
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends wget \
+  && rm -rf /var/lib/apt/lists/*
+
+ENV ASPNETCORE_URLS=http://+:8080
+
+COPY --from=build /app/publish .
+
+EXPOSE 8080
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
+  CMD wget -qO- http://127.0.0.1:8080/ >/dev/null 2>&1 || exit 1
+
+ENTRYPOINT ["dotnet", "WorkTracker.dll"]