Add automatic plugin installation on first Docker deployment

- Add docker-entrypoint.sh: runs migrations and bootstraps plugins
- Add bootstrap-plugins.sh: installs all plugins (disabled by default)
- Update Dockerfile to use entrypoint
- Plugins can now be enabled via Settings UI after first deployment
- Idempotent: safe to run multiple times
- Solves issue where imported prod databases had tables but no plugin registry

scripts/docker-entrypoint.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+# Docker container entrypoint for ShopDB Flask.
+# Runs migrations, bootstraps plugins on first deployment, then starts the app.
+
+set -e
+
+echo "==> ShopDB Flask Container Starting"
+
+# Wait for database to be ready (optional, useful with docker-compose)
+if [ -n "$DATABASE_URL" ]; then
+    echo "==> Waiting for database..."
+    for i in {1..30}; do
+        if flask db current &>/dev/null; then
+            echo "==> Database ready"
+            break
+        fi
+        echo "  Attempt $i/30: database not ready, waiting..."
+        sleep 2
+    done
+fi
+
+# Run migrations
+echo "==> Running database migrations"
+flask db upgrade || {
+    echo "ERROR: Database migrations failed"
+    exit 1
+}
+
+# Bootstrap plugins on first deployment
+echo "==> Checking plugin installation"
+/app/scripts/bootstrap-plugins.sh
+
+echo "==> Starting application"
+exec "$@"