Add new file

Dockerfile

+FROM microsoft/dotnet:2.2-sdk-alpine AS builder
+WORKDIR /app
+
+COPY ./Stratis.Guru ./
+
+RUN dotnet build
+
+RUN dotnet publish -c Release --framework netcoreapp2.2 --runtime alpine-x64 -o out
+
+FROM microsoft/dotnet:2.2-runtime-alpine
+WORKDIR /app
+COPY --from=builder /app/out .
+COPY ./appsettings.json .
+
+RUN mkdir -p /app/Documentation/site
+
+ENTRYPOINT ["dotnet", "Stratis.Guru.dll"]
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