[google-cloud-sql-discuss] cloud proxy - in cloud build, connection?

Hi there,

recently started evaluating gcp for tooling and have a question regarding the cloud-proxy that starts automatically.

I dont seem to be able to connect to it in the documented manner on 127.0.0.1:3307 

Anyone have any experience with this?

```

Step #2 - "migrate": ---------- CONNECT CLOUDSQL ----------

Step #2 - "migrate": cloud_sql_proxy is running.

Step #2 - "migrate": Connections: hardy-clover-******:europe-west3:db-dev-mccmsdemo.

Step #2 - "migrate":

Step #2 - "migrate": ---------- EXECUTE COMMAND ----------

Step #2 - "migrate": sh .cloudbuild/django_migrate.sh

Step #2 - "migrate": 🎸 migrate postgres://*******:***********@127.0.0.1:3307/dbname

Step #2 - "migrate": Traceback (most recent call last):

Step #2 - "migrate": File "/usr/local/lib/python3.8/site-packages/django/db/backends/base/base.py", line 219, in ensure_connection

Step #2 - "migrate": self.connect()

Step #2 - "migrate": File "/usr/local/lib/python3.8/site-packages/django/utils/asyncio.py", line 26, in inner

Step #2 - "migrate": return func(*args, **kwargs)

Step #2 - "migrate": File "/usr/local/lib/python3.8/site-packages/django/db/backends/base/base.py", line 200, in connect

Step #2 - "migrate": self.connection = self.get_new_connection(conn_params)

Step #2 - "migrate": File "/usr/local/lib/python3.8/site-packages/django/utils/asyncio.py", line 26, in inner

Step #2 - "migrate": return func(*args, **kwargs)

Step #2 - "migrate": File "/usr/local/lib/python3.8/site-packages/django/db/backends/postgresql/base.py", line 187, in get_new_connection

Step #2 - "migrate": connection = Database.connect(**conn_params)

Step #2 - "migrate": File "/usr/local/lib/python3.8/site-packages/psycopg2/__init__.py", line 127, in connect

Step #2 - "migrate": conn = _connect(dsn, connection_factory=connection_factory, **kwasync)

Step #2 - "migrate": psycopg2.OperationalError: could not connect to server: Connection refused

Step #2 - "migrate": Is the server running on host "127.0.0.1" and accepting

Step #2 - "migrate": TCP/IP connections on port 3307?

Step #2 - "migrate":

Step #2 - "migrate":

Step #2 - "migrate": The above exception was the direct cause of the following exception:

```

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