The following error seems to prevent any QC Framework Algorithm to trade live with Alpaca Brokerage: 

Runtime Error: Non null IExecutionModel and IPortfolioConstructionModel are currently unsuitable for Cash Modeled brokerages (e.g. GDAX) and may result in unexpected trades. To prevent possible user error we've restricted them to Margin trading.

Alpaca Brokerage accounts are currently of the "Cash" type, not "Margin" type. Is there any way to run Framework Algorithms on Alpaca if the algorithm is strictly long-only (no short selling) with leverage 1?