I don’t think the have the latest version.
I tried the approach you suggested using those docker images from hexpm and now I get a slightly different error:
root@ca9d0e762504:/app# _build/prod/rel/topo_master/bin/topo_master start
/app/_build/prod/rel/topo_master/releases/1.4.0/../../erts-14.2.1/bin/erl: 12: exec: /app/_build/prod/rel/topo_master/erts-14.2.1/bin/erlexec: Exec format error
