How to test with local REGTEST electrs server

1. Install docker desktop

2. Create aliases to start, stop, view logs and send cli commands to container

   alias rtstart='docker run -d --rm -p 127.0.0.1:18443-18444:18443-18444/tcp -p 127.0.0.1:60401:60401/tcp --name electrs bitcoindevkit/electrs'
   alias rtstop='docker kill electrs'
   alias rtlogs='docker container logs electrs'
   alias rtcli='docker exec -it electrs /root/bitcoin-cli -regtest -rpcuser=admin -rpcpassword=passw $@'

3. Use aliases to start container, view logs, run cli command, stop container

   rtstart  
   rtlogs  
   rtcli help    
   rtcli getwalletinfo    
   rtcli getnewaddress  
   rtstop

4. Configure Android Studio ADB

   "Use existing manually managed server" on port 5038

5. From localhost command line stop and restart adb with port forwarding

   adb kill-server
   adb -L tcp:localhost:5038 reverse tcp:60401 tcp:60401
   adb -L tcp:localhost:5038 reverse --list

6. Open Android Studio "Build Variants" window (lower left)

7. Select Active Build Variant "localDebug"

8. Run or Debug "app"