Docker instructions

To build retesteth docker image you use the following docker image instructions:
(tested on Docker version 18.03.1-ce, build 9ee9f40)

1) Build the docker image https://github.com/ethereum/retesteth/blob/master/Dockerfile

2) Clone the test repo https://github.com/ethereum/tests

3) Edit config file for the retesteth to start your client https://github.com/ethereum/tests/blob/develop/Retesteth/aleth/aleth.sh
Aleth is default client. just change the script line

aleth --test --db-path  --ipcpath  --log-verbosity 5 &

to

/tests/<yourClientName> --test --db-path  --ipcpath  --log-verbosity 5 &

the options --test --db--path and so on might be different in your client

4) Put your client executable to the test folder you have just cloned. /tests/<yourClientName>

5) To run the docker image

docker  run  -v "/localpath/to/test/repo:/tests"  <imgaid> -t BlockchainTests -- --testpath /tests