Create start.sh

start.sh

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+#!/bin/bash
+
+# This script starts the necessary services and then runs the main application.
+
+# --- Step 1: Switch to root to manage services ---
+# Use sudo to run service commands as root.
+# This is necessary because the Docker container will start as the 'user'.
+echo "--- Starting Services (requires root) ---"
+
+# Start Valkey in the background (daemonize)
+# The config file is at /etc/valkey/valkey.conf
+sudo valkey-server /etc/valkey/valkey.conf --daemonize yes
+echo "[INFO] Valkey server process initiated."
+
+# Start the PostgreSQL database service
+# The 'service' command handles running it as the correct 'postgres' user
+sudo service postgresql start
+echo "[INFO] PostgreSQL service initiated."
+
+
+# --- Step 2: Wait for services to be fully ready ---
+echo "--- Waiting for services to initialize ---"
+
+# Wait for PostgreSQL to be ready to accept connections
+# The -q flag makes it quiet; it will exit with status 0 when ready.
+until sudo -u postgres pg_isready -q
+do
+  echo "[INFO] Waiting for PostgreSQL to be ready..."
+  sleep 2
+done
+echo "[SUCCESS] PostgreSQL is ready."
+
+# Wait for Valkey to be ready
+# The PING command will return PONG if the server is up.
+until valkey-cli -h 127.0.0.1 -p 6379 ping | grep -q "PONG"
+do
+  echo "[INFO] Waiting for Valkey to be ready..."
+  sleep 2
+done
+echo "[SUCCESS] Valkey is ready."
+
+
+# --- Step 3: Run the application ---
+echo "--- Starting Bun Application ---"
+# Use 'exec' to replace the shell process with your application.
+# This ensures that your app is the main process and receives signals correctly.
+exec bun run app.js