Add some more docs and streamline entrypoint

examples/fullstack/backend/dev-entrypoint.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+echo "starting up..."
+node ace generate:key
+
+
+# Check for pending migrations by parsing output
+PENDING_MIGRATIONS=$(node ace migration:status | grep -ic 'pending')
+
+# Run migrations only if there are pending ones
+
+if [ "$PENDING_MIGRATIONS" -gt 0 ]; then
+  echo "Found $PENDING_MIGRATIONS pending migration(s). Running migrations..."
+  node ace migration:run --force
+else
+  echo "No pending migrations."
+fi
+
+echo "Seeding database..."
+node ace db:seed
+
+# Start the dev server
+node ace serve --watch