Fix docker exiting when no migrations

Author: marcus-snx

indexers-v2/Dockerfile

@@ -13,4 +13,4 @@ COPY . .
 RUN pip install --upgrade pip
 RUN pip install --no-cache-dir -r requirements.txt
 
-ENTRYPOINT ["sh", "-c", "python3 main.py --network_name \"$NETWORK_NAME\" --rpc_endpoint \"$RPC_ENDPOINT\" && npm run generate:processor && npm run build && npm run generate:migration && npm run start"]
+ENTRYPOINT ["sh", "-c", "python3 main.py --network_name \"$NETWORK_NAME\" --rpc_endpoint \"$RPC_ENDPOINT\" && npm run generate:processor && npm run build && (npm run generate:migration || true) && npm run start"]