There are no changes expected on web-terminal-exec side for WebTerminal. So, it's needed to build containers candidates of `web-terminal-exec`.

Upstream repo: https://github.com/eclipse/che-machine-exec

Downstream Github repo: https://github.com/redhat-developer/web-terminal-exec

Pkg devel repo: http://pkgs.devel.redhat.com/cgit/containers/web-terminal-exec/tree/?h=web-terminal-1.0-rhel-8

See and update when you implement this issue https://docs.google.com/spreadsheets/d/1LpqMOL-2fUWeP60daRO_JmgCeL7aFomIF5SdjE3PvgU/edit#gid=1865722069

https://github.com/redhat-developer/codeready-workspaces/blob/master/dependencies/che-machine-exec/Jenkinsfile

Note that it's about manual syncing repos and triggering build. To automate the process with CI jobs - there will be another issue.