add example.env

apps/backend/example.env

@@ -0,0 +1,22 @@
+# PostgreSQL for kysely codegen
+DATABASE_URL=
+# PostgreSQL
+DATABASE=
+DATABASE_USER=
+DATABASE_PASSWORD=
+DATABASE_HOST=
+DATABASE_PORT=
+
+# Nodemailer
+MAIL_HOST=
+MAIL_PORT=
+MAIL_USER=
+MAIL_PASSWORD=
+
+# APP
+APP_DOMAIN=
+APP_ENV_TYPE=
+
+# Secrets
+SECRET_AUTH_SIGN=
+SECRET_AUTH_HMAC=