This is a trusted build on the DockerHub repository.
To run:
docker run -d -v /home/electrumx:/home/electrumx -p 54485:50001 --link piggycoind:piggycoind --name piggyelectrumx teampiggycoin/electrumx
Notes:
This connects by default to the dockerized teampiggycoin/piggycoind container if running on the same host (host-named piggycoind). Do not forget to add the assigned docker IP address of this container to the newpiggycoin.conf of the piggycoind container to allow RPC.