update presets; correct example in help

epm-docker-test.sh

@@ -69,17 +69,17 @@ Options:
   --eepm-dir <path>            Explicit eepm tree path
   --builder-user <user>        Preferred owner for ~/Projects/... lookup
   --builder-path <path>        Explicit builder64 source path
-  --preset <all|russian|mainstream>
+  --preset <all|russian|main>
                                Add a named system preset
   --log-root <path>            Directory for saved logs
   -h, --help                   Show this help
 
 Examples:
-  epm-docker-test.sh nginx fedora
-  epm-docker-test.sh nginx fedora debian ubuntu
-  epm-docker-test.sh nginx --preset mainstream
-  epm-docker-test.sh play nginx Fedora/43
-  epm-docker-test.sh --remote-user builder-robot --eepm-source builder64 nginx fedora:43
+  epm-docker-test.sh telegram fedora
+  epm-docker-test.sh telegram fedora debian ubuntu
+  epm-docker-test.sh telegram --preset main
+  epm-docker-test.sh play telegram Fedora/43
+  epm-docker-test.sh --remote-user builder-robot --eepm-source builder64 telegram fedora:43
 EOF
 }
 
@@ -158,21 +158,26 @@ normalize_system_name() {
 
 expand_preset_systems() {
   case "$1" in
-    mainstream)
+    main)
       printf '%s\n' \
         fedora \
         debian \
-        ubuntu \
-        opensuse/leap \
-        alpine \
-        void
+        ubuntu:24.04 \
+        alt:sisyphus \
+        alt:p11
       ;;
     russian)
       printf '%s\n' \
-        alt:sisyphus
+        alt:sisyphus \
+        alt:p11 \
+        rosa-2021.1 \
+        rosalab/rosa2021.1 \
+        registry.red-soft.ru/redos7c/ubi \
+        registry.red-soft.ru/redos8c/ubi \
+        registry.astralinux.ru/library/alse:1.7
       ;;
     all)
-      expand_preset_systems mainstream
+      expand_preset_systems main
       expand_preset_systems russian
       ;;
     *)