Using https://til.simonwillison.net/docker/attach-bash-to-running-container - I figured out how to run gdb. I had to use --privileged here because otherwise gdb showed a "Could not attach to process" error. ``` docker exec --privileged -it 16197781a7b5 bash

apt-get install gdb python3-dbg

gdb /usr/bin/python3 -p 20

This paused the process. I tried running this: (gdb) py-bt Traceback (most recent call first): File "/usr/lib/python3.8/asyncio/base_events.py", line 1845, in _run_once if handle._cancelled: File "/usr/lib/python3.8/asyncio/base_events.py", line 570, in run_forever self._run_once() File "/usr/lib/python3.8/asyncio/base_events.py", line 603, in run_until_complete self.run_forever() File "/usr/local/lib/python3.8/dist-packages/uvicorn/server.py", line 49, in run loop.run_until_complete(self.serve(sockets=sockets)) File "/usr/local/lib/python3.8/dist-packages/uvicorn/main.py", line 386, in run server.run() File "/usr/local/lib/python3.8/dist-packages/datasette/cli.py", line 575, in serve uvicorn.run(ds.app(), uvicorn_kwargs) File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 610, in invoke return callback(*args, kwargs) File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 1066, in invoke return ctx.invoke(self.callback, ctx.params) File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 1259, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 782, in main rv = self.invoke(ctx) File "/usr/local/lib/python3.8/dist-packages/click/core.py", line 829, in call return self.main(*args, kwargs) File "/usr/local/bin/datasette", line 8, in <module> sys.exit(cli()) <built-in method exec of module object at remote 0x7f0981a280e0> File "/usr/lib/python3.8/trace.py", line 450, in runctx exec(cmd, globals, locals) File "/usr/lib/python3.8/trace.py", line 6632, in main File "/usr/lib/python3.8/trace.py", line 756, in <module> main() <built-in method exec of module object at remote 0x7f0981a280e0> File "/usr/lib/python3.8/runpy.py", line 343, in _run_code File "/usr/lib/python3.8/runpy.py", line 450, in _run_module_as_main ``` Not sure if that's useful or not.