Running python testcontainers on Mac Silicon M1

I am not sure if it is related to the docker installation on mac but I am not able to run testcontainers since I switched to Mac. I got a timeout error on the self._connect() method My code is petty straightforward :

def run_db():
    with MySqlContainer(f'mysql:5.7.17') as mysql:
        yield mysql

mysql = run_db()
conn_string = next(mysql).get_connection_url()
print(f"DB ready for connection at URL : {conn_string}")

I got this output :

Pulling image mysql:5.7.17
Container started: 9749203988
Waiting to be ready...

And then I got this traceback

---------------------------------------------------------------------------
TimeoutException                          Traceback (most recent call last)
/Users/user1/projects/my_project/poc1/poc1.ipynb Cell 6' in <cell line: 8>()
      6 mysql = run_db()
      7 # Connection string
----> 8 conn_string = next(mysql).get_connection_url()
      9 # Engine object
     10 engine = create_engine(conn_string)

/Users/user1/projects/my_project/poc1/poc1.ipynb Cell 4' in run_db()
     47 def run_db():
     48     """This function will run an instance of mysql db container and yield a testcontainer object
     49     This object will be used to CRUD data and profile the performance
     50     """
---> 51     with MySqlContainer(f'mysql:{MYSQL_VERSION}') as mysql:
     52         yield mysql

File ~/projects/my_project/venv/lib/python3.8/site-packages/testcontainers/core/container.py:64, in DockerContainer.__enter__(self)
     63 def __enter__(self):
---> 64     return self.start()

File ~/projects/my_project/venv/lib/python3.8/site-packages/testcontainers/core/generic.py:49, in DbContainer.start(self)
     47 self._configure()
     48 super().start()
---> 49 self._connect()
     50 return self

File ~/projects/my_project/venv/lib/python3.8/site-packages/testcontainers/core/waiting_utils.py:46, in wait_container_is_ready.<locals>.wrapper(wrapped, instance, args, kwargs)
     44         time.sleep(config.SLEEP_TIME)
     45         exception = e
---> 46 raise TimeoutException(
     47     """Wait time exceeded {0} sec.
     48         Method {1}, args {2} , kwargs {3}.
     49             Exception {4}""".format(config.MAX_TRIES,
     50                                     wrapped.__name__,
     51                                     args, kwargs, exception))

TimeoutException: Wait time exceeded 120 sec.
                Method _connect, args () , kwargs {}.
                    Exception 'NoneType' object is not subscriptable

The docker daemon is running and the output of docker ps command has no issue, but no container is running :

> docker ps                                                                                                       
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES

EDIT

When trying to run mysql:5.7.17 manually : I got this error.

~ » docker run mysql:5.7.17
WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested
runtime: failed to create new OS thread (have 2 already; errno=22)
fatal error: newosproc

runtime stack:
runtime.throw(0x524da0, 0x9)
	/usr/local/go/src/runtime/panic.go:527 +0x90
runtime.newosproc(0xc82002a000, 0xc820039fc0)
	/usr/local/go/src/runtime/os1_linux.go:150 +0x1ab
runtime.newm(0x555ce8, 0x0)
	/usr/local/go/src/runtime/proc1.go:1105 +0x130
runtime.main.func1()
	/usr/local/go/src/runtime/proc.go:48 +0x2c
runtime.systemstack(0x5c4300)
	/usr/local/go/src/runtime/asm_amd64.s:262 +0x79
runtime.mstart()
	/usr/local/go/src/runtime/proc1.go:674

goroutine 1 [running]:
runtime.systemstack_switch()
	/usr/local/go/src/runtime/asm_amd64.s:216 fp=0xc820024770 sp=0xc820024768
runtime.main()
	/usr/local/go/src/runtime/proc.go:49 +0x62 fp=0xc8200247c0 sp=0xc820024770
runtime.goexit()
	/usr/local/go/src/runtime/asm_amd64.s:1696 +0x1 fp=0xc8200247c8 sp=0xc8200247c0

So it seems to be architecture-related issue since the default image is built on amd64 and m1 is arm64…I will continue to search on this and will update

[jossefaz]

I came across the option of specifying the platform :

docker pull --platform=linux/amd64 mysql

Which works However, I did not manage to specify this option through the testcontainers API I tried :

with MySqlContainer(platform='linux/amd64') as mysql:
    yield mysql

But I still got the timeout error. However: I do see my container is now running by executing this code. But I still got the timeout error and testcontainers seems to not be able to retrieve the connection string from the running container :

~ » docker ps                                                                                                                       jazoulay@P6QMVFV7VH
CONTAINER ID   IMAGE          COMMAND                  CREATED         STATUS         PORTS                                NAMES
ccc42390b218   mysql:latest   "docker-entrypoint.s…"   4 minutes ago   Up 4 minutes   33060/tcp, 0.0.0.0:54094->3306/tcp   beautiful_mayer

[tillahoffmann]

Some of these issues should be fixed in 3.5.0 after merging #136. Feel free to reopen if M1-specific issues crop up again.