[skip CI] Update tea-ci.org settings

32-bit due to Cygwin 64-bit bug that bites occasionally.
Add -validate with output on success
For the secrets, need to update the YAML to enable, the generate the secrets file, containing the hash of this YAML file once tea-ci is updated to support this.

.drone.yml

@@ -1,7 +1,30 @@
 # Build configure for https://www.tea-ci.org (fork of Drone CI with Msys2 support)
+# 32-bit until release including https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;a=commitdiff;h=0aa738220bb9dea2ad479e484560767b36701947
 build:
-  image: teaci/msys64
-  shell: mingw64
+  image: teaci/msys32
+  shell: mingw32
   pull: true
+  branches:
+    -master
+  environment:
+    - SUBTARGET=tiny
+    - MINGW32=/c/msys32/mingw32
+    - MAME_EXE=tiny.exe
+#    - SOURCES=src/mame/drivers/pacman.cpp
   commands:
-    - make SUBTARGET=tiny MINGW64=/c/msys64/mingw64
+    - make
+    - ./$MAME_EXE -validate || echo "Validation successful"
+  
+# Need to create secrets file from within tea-ci.org
+#notify:
+#  email:
+#    from: git@mamedev.org
+#    host: $$EMAIL_SERVER
+#    username: $$EMAIL_USERNAME
+#    password: $$EMAIL_PASSWORD
+#    recipients:
+#      - $$EMAIL_LISTADDR
+#    when:
+#      success: false
+#      failure: false
+#      change: true