Make JIRA notification email explicit

Document root environment variables

Author: octo-topi

sample.env

@@ -0,0 +1,22 @@
+# =========
+# NOTIFICATION
+# =========
+
+# Email of JIRA account used to signal Pull request deployments to JIRA
+# presence: required
+#
+# If not present, the notification will fail.
+#
+# presence: required
+# type: email
+# default: none
+JIRA_NOTIFICATION_ACCOUNT_EMAIL
+
+# Token of JIRA account used to signal Pull request deployments to JIRA
+#
+# If not present, the notification will fail.
+#
+# presence: required
+# type: Secret
+# default: none
+JIRA_NOTIFICATION_ACCOUNT_TOKEN