Is there any way to combine mining block to same mining sighash with several pc?

you’d want to update the key values in the validator container… Something like:

docker exec -it sawtooth-validator-default bash
echo "new private key here" > /etc/sawtooth/keys/validator.priv
echo "new public key here" > /etc/sawtooth/keys/validator.pub
exit
docker-compose down
docker-compose up

You could also point the /etc/sawtooth/keys/ path to a local directory. Something like:

  1. Create a directory under Server called keys
  2. Put your desired validator.priv and validator.pub keys there
  3. Update the docker-compose file:

Change:

- type: volume
  source: validator-key-volume
  target: /etc/sawtooth/keys/

to:

volumes:
  - ./keys:/etc/sawtooth/keys/
  1. Restart docker: docker-compose up

courtesy of @will_gluwa