Add postgres connection

DockerFile

@@ -5,4 +5,4 @@ RUN cd btcpayserver && dotnet restore && cd BTCPayServer && dotnet build -c Debu
 EXPOSE 23001
 WORKDIR /btcpayserver/BTCPayServer
 ENTRYPOINT ["dotnet", "bin/Debug/netcoreapp2.0/BTCPayServer.dll"]
-CMD ["--testnet", "--explorercookiefile=/.cookie", "--explorerurl=https://nbxplorer-testnet-public.azurewebsites.net/", "--bind=0.0.0.0"]
+CMD ["--testnet", "--explorercookiefile=/.cookie", "--explorerurl=https://nbxplorer-testnet-public.azurewebsites.net/", "--bind=0.0.0.0", "--postgres=\"User ID=postgres;Host=postgres;Port=54320;Database=btcpayserver\"""]

README.md

@@ -6,7 +6,7 @@ Running on TestNet with postgres database:
 ```
 git clone https://github.com/btcpayserver/btcpayserver-docker
 cd btcpayserver-docker
-docker-compose up
+docker-compose up --force-recreate
 ```
 
 You can then browse http://127.0.0.1:23001/