feat: add Dockerfile for Linux container build

.dockerignore

@@ -0,0 +1,4 @@
+**/.git
+**/obj
+**/bin
+*.md

Dockerfile

@@ -0,0 +1,19 @@
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+WORKDIR /src
+
+COPY PepApi.Core/PepApi.Core.csproj PepApi.Core/
+COPY PepLib.Core/PepLib.Core.csproj PepLib.Core/
+RUN dotnet restore PepApi.Core/PepApi.Core.csproj
+
+COPY PepApi.Core/ PepApi.Core/
+COPY PepLib.Core/ PepLib.Core/
+
+RUN dotnet publish PepApi.Core/PepApi.Core.csproj -c Release -o /app/publish
+
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS final
+WORKDIR /app
+COPY --from=build /app/publish .
+
+ENV ASPNETCORE_URLS=http://+:8085
+
+ENTRYPOINT ["dotnet", "PepApi.Core.dll"]