Update welcome page (#5)

src/Dockerfile

@@ -0,0 +1,10 @@
+FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
+WORKDIR /jjj
+COPY . ./
+WORKDIR /jjj/JobsJobsJobs/Server
+RUN dotnet publish JobsJobsJobs.Server.csproj -c Release /p:PublishProfile=Properties/PublishProfiles/FolderProfile.xml
+
+FROM mcr.microsoft.com/dotnet/aspnet:5.0
+WORKDIR /jjj
+COPY --from=build /jjj/JobsJobsJobs/Server/bin/Release/net5.0/linux-x64/publish/ ./
+ENTRYPOINT [ "/jjj/JobsJobsJobs.Server" ]