diff --git a/docker-compose.yml b/docker-compose.yml
index e38992f..325e6df 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -4,12 +4,7 @@ services:
     container_name: mcp-bash
     restart: unless-stopped
     working_dir: /workspace
-    command: |
-      bash -c "
-        apt-get update -qq &&
-        apt-get install -y --no-install-recommends curl wget git vim nano htop procps jq less unzip &&
-        pip install -q -r /app/requirements.txt &&
-        cd /app && python -u main.py"
+    command: bash /app/startup.sh
     ports:
       - "8000:8000"
     volumes:
diff --git a/server/startup.sh b/server/startup.sh
new file mode 100644
index 0000000..45e6a3d
--- /dev/null
+++ b/server/startup.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+set -e
+
+# ─── System packages ──────────────────────────────────────────────────────────
+apt-get update -qq
+apt-get install -y --no-install-recommends \
+    curl wget git vim nano htop procps jq less unzip
+
+# ─── Python dependencies ──────────────────────────────────────────────────────
+pip install -q -r /app/requirements.txt
+
+# ─── Custom setup (add your own steps below) ──────────────────────────────────
+# Example:
+#   apt-get install -y --no-install-recommends nodejs npm
+#   pip install -q pandas numpy
+#   curl -fsSL https://example.com/tool | bash
+
+# ─── Start server ─────────────────────────────────────────────────────────────
+exec python -u /app/main.py