chore: add Dockerfiles for Api and Worker

- Api: mcr.microsoft.com/dotnet/aspnet:10.0 base, exposes 8080
- Worker: mcr.microsoft.com/dotnet/runtime:10.0 base (no HTTP stack)
- Both use multi-stage build with layer-cached csproj restore
- .dockerignore excludes bin/obj/git/IDE folders
- Dockerfiles added to /docker/ solution folder

Ref: IT-628

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

HrynCo.NotificationService.Worker/Dockerfile

@@ -0,0 +1,31 @@
+# syntax=docker/dockerfile:1.4
+
+FROM mcr.microsoft.com/dotnet/runtime:10.0 AS base
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+
+COPY ["Directory.Build.props", "."]
+COPY ["Directory.Packages.props", "."]
+COPY ["HrynCo.NotificationService.DAL.Abstract/HrynCo.NotificationService.DAL.Abstract.csproj", "HrynCo.NotificationService.DAL.Abstract/"]
+COPY ["HrynCo.NotificationService.DAL.EF/HrynCo.NotificationService.DAL.EF.csproj", "HrynCo.NotificationService.DAL.EF/"]
+COPY ["HrynCo.NotificationService.Services/HrynCo.NotificationService.Services.csproj", "HrynCo.NotificationService.Services/"]
+COPY ["HrynCo.NotificationService.Worker/HrynCo.NotificationService.Worker.csproj", "HrynCo.NotificationService.Worker/"]
+
+RUN dotnet restore "HrynCo.NotificationService.Worker/HrynCo.NotificationService.Worker.csproj"
+
+COPY . .
+
+WORKDIR "/src/HrynCo.NotificationService.Worker"
+RUN dotnet build "./HrynCo.NotificationService.Worker.csproj" -c $BUILD_CONFIGURATION -o /app/build
+
+FROM build AS publish
+ARG BUILD_CONFIGURATION=Release
+RUN dotnet publish "./HrynCo.NotificationService.Worker.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "HrynCo.NotificationService.Worker.dll"]