Added example env file

.env.example

@@ -0,0 +1,15 @@
+# ----------------------------
+# Example environment file for MOG APP Docker deployment
+# Copy this file to `.env` at the project root and adjust the values
+# ----------------------------
+
+# PostgreSQL connection details (database is expected to run on the Docker host)
+PSQL_HOST=127.0.0.1
+PSQL_PORT=5432
+PSQL_USER=postgres
+PSQL_PASSWORD=postgres
+PSQL_DBNAME=ffxi_items
+
+# Host ports to expose the containers (edit if they clash)
+API_PORT=8000
+WEB_PORT=3050