Docker container memory leak troubleshooting methods: 1) use docker stats to monitor container memory usage trends; 2) enter container and use top, ps, free commands to view process memory usage; 3) use pmap to view process memory mappings; 4) use tools like valgrind, AddressSanitizer to detect memory leaks; 5) check memory allocation and deallocation logic in application code; 6) view memory-related errors in application logs; 7) use docker inspect to view container memory limit configuration; 8) use --memory-swap parameter to limit swap usage; 9) regularly restart containers to release memory (temporary solution); 10) optimize application code and fix memory leak issues.