updated dockerfile, readme and settings

Dockerfile

@@ -1,22 +1,22 @@
 FROM microsoft/dotnet:sdk AS build-env
 WORKDIR /app
 
-# Copy csproj and restore as distinct layers
-COPY ./*/*.csproj ./
-RUN dotnet restore
-
 # Copy everything else and build
 COPY . ./
-RUN dotnet publish -c Release -o out
+RUN dotnet restore Tv7Playlist.sln
+RUN dotnet publish -c Release -o out Tv7Playlist.sln
 
 # Build runtime image
 FROM microsoft/dotnet:aspnetcore-runtime
 
 WORKDIR /app
+RUN mkdir /data
 
 COPY --from=build-env /app/Tv7Playlist/out .
 
 ENV ASPNETCORE_URLS=http://+:80
 EXPOSE 80
 
+VOLUME [ "/data" ]
+
 ENTRYPOINT ["dotnet", "Tv7Playlist.dll"]