Add email notify

.drone.yml

@@ -15,3 +15,24 @@ steps:
     - cmake .
     - make -j$(nproc)
     - ctest
+- name: notify
+  image: drillster/drone-email
+  when:
+    status:
+      - failure
+  settings:
+    from.address:
+      from_secret: EMAIL_ADDRESS
+    from.name:
+      from_secret: EMAIL_SENDER
+    host:
+      from_secret: EMAIL_HOST
+    port:
+      from_secret: EMAIL_PORT
+    username:
+      from_secret: EMAIL_USERNAME
+    password:
+      from_secret: EMAIL_PASSWORD
+    no_starttls: true
+    recipients:
+      - i@sainnhe.dev