feat(Grafana): Add SMTP configuration

grafana/docker-compose.smtp.yml

@@ -0,0 +1,12 @@
+version: "3.8"
+
+services:
+  grafana:
+    environment:
+      # https://grafana.com/docs/grafana/latest/administration/configuration/#smtp
+      GF_SMTP_ENABLED: true
+      GF_SMTP_HOST: ${GF_SMTP_HOST:?err} # with port
+      GF_SMTP_USER: ${GF_SMTP_USER:?err}
+      GF_SMTP_PASSWORD: ${GF_SMTP_PASSWORD:?err}
+      GF_SMTP_FROM_ADDRESS: ${GF_SMTP_FROM_ADDRESS:?err}
+      GF_SMTP_FROM_NAME: ${GF_SMTP_FROM_NAME:?err}