diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..9ee9b4d
--- /dev/null
+++ b/.env.example
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+INVENTORY_DB_USER=user01
+INVENTORY_DB_PASSWORD=postgres
+INVENTORY_DB_NAME=inventory_db
+
+BILLING_DB_USER=user01
+BILLING_DB_PASSWORD=password
+BILLING_DB_NAME=billing_db
+
+RABBITMQ_USER=rabbit
+RABBITMQ_PASSWORD=password
+RABBITMQ_QUEUE=billing_queue
+
+RABBITMQ_PORT=5672
+INVENTORY_APP_PORT=8080
+BILLING_APP_PORT=5000
+APIGATEWAY_PORT=3000