chore: import upstream snapshot with attribution

Dockerfile

@@ -0,0 +1,27 @@
+#
+#   LEAN Docker Container 20200522
+#   Cross platform deployment for multiple brokerages
+#
+
+# Use base system
+FROM quantconnect/lean:foundation
+
+MAINTAINER QuantConnect <contact@quantconnect.com>
+
+#Install debugpy and PyDevD for remote python debugging
+RUN pip install --no-cache-dir ptvsd==4.3.2 debugpy~=1.6.7 pydevd-pycharm~=231.9225.15
+
+# Install vsdbg for remote C# debugging in Visual Studio and Visual Studio Code
+RUN wget https://aka.ms/getvsdbgsh -O - 2>/dev/null | /bin/sh /dev/stdin -v 17.10.20209.7 -l /root/vsdbg
+
+COPY ./DataLibraries /Lean/Launcher/bin/Debug/
+COPY ./Lean/Data/ /Lean/Data/
+COPY ./Lean/Launcher/bin/Debug/ /Lean/Launcher/bin/Debug/
+COPY ./Lean/Optimizer.Launcher/bin/Debug/ /Lean/Optimizer.Launcher/bin/Debug/
+COPY ./Lean/Report/bin/Debug/ /Lean/Report/bin/Debug/
+COPY ./Lean/DownloaderDataProvider/bin/Debug/ /Lean/DownloaderDataProvider/bin/Debug/
+
+# Can override with '-w'
+WORKDIR /Lean/Launcher/bin/Debug
+
+ENTRYPOINT [ "dotnet", "QuantConnect.Lean.Launcher.dll" ]