new abbrevations for docker compose exec

ansible/roles/fish/files/fish/conf.d/abbreviations.fish

@@ -5,6 +5,7 @@ abbr --add dcpcp "docker compose cp"
 abbr --add dcpce "docker compose create"
 abbr --add dcpdn "docker compose down --remove-orphans --volumes --timeout 0"
 abbr --add dcpevt "docker compose events"
+abbr --add dcpex "docker compose exec"
 abbr --add dcpimg "docker compose images"
 abbr --add dcpkl "docker compose kill"
 abbr --add dcplg "docker compose logs"