feat: add entrypoint script to execute main.py with environment variable configuration

Author: srozsnyai

entrypoint.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# Default values for environment variables
+PROJECT_ID="${PROJECT_ID}"
+INSTANCE_ID="${INSTANCE_ID}"
+DATABASE_ID="${DATABASE_ID}"
+MODE="${MODE:-noise}"
+DURATION="${DURATION:-60}"
+USERS="${USERS:-10000}"
+PRODUCTS="${PRODUCTS:-5000}"
+ORDERS="${ORDERS:-50000}"
+
+# Execute the Python script with mapped arguments
+python3 main.py \
+    --project "${PROJECT_ID}" \
+    --instance "${INSTANCE_ID}" \
+    --database "${DATABASE_ID}" \
+    --mode "${MODE}" \
+    --duration "${DURATION}" \
+    --users "${USERS}" \
+    --products "${PRODUCTS}" \
+    --orders "${ORDERS}" \
+    ${ORDER_ID:+--order-id "$ORDER_ID"}