Use a more consistent tank-postgres name for the container

contrib/run_client.sh

 #!/bin/bash
 
-exec docker exec -it aura-postgres /bin/bash -c "echo \"alias psql='psql -U tank'\" > /tmp/.bashrc-psql; cd /scripts/; exec bash --rcfile /tmp/.bashrc-psql"
+exec docker exec -it tank-postgres /bin/bash -c "echo \"alias psql='psql -U tank'\" > /tmp/.bashrc-psql; cd /scripts/; exec bash --rcfile /tmp/.bashrc-psql"

contrib/run_server.sh

 #!/bin/bash
 
 SCRIPTS_D=$(realpath "${BASH_SOURCE%/*}/")
-exec docker run -it --rm --name aura-postgres -e POSTGRES_USER=tank -e POSTGRES_PASSWORD=aura -v "$SCRIPTS_D:/scripts:ro" -p 5432:5432 postgres:10.19
+exec docker run -it --rm --name tank-postgres -e POSTGRES_USER=tank -e POSTGRES_PASSWORD=aura -v "$SCRIPTS_D:/scripts:ro" -p 5432:5432 postgres:10.19