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How do I do a migration if my backend container won't start due to an error? #1345
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Example Code
$ docker compose exec backend bash
service "backend" is not running
Description
I have an error that was caused by some model code. I have updated the models and I want to create a new migration, but the following command fails:
docker compose exec backend bash
service "backend" is not running
Looking at the logs, it's clear this is caused by my model not having a relationship done properly.
Operating System
macOS
Operating System Details
Mac M1
Python Version
3.11.2
Additional Context
No response
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In docker-compose.override.yml comment out the following lines
command:
- fastapi
- run
- --reload
- "app/main.py"
and uncomment the line above
# command: sleep infinity # Infinite loop to keep container alive doing nothing
Then run docker compose watch and in new terminal, attach to the container with docker compose exec backend bash.
Now you can see something like
root@7f2607af31c3:/app#
You are inside the backend container and can run alembic commands
Replies: 2 comments
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see here on how to apply migrations
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In docker-compose.override.yml comment out the following lines
command:
- fastapi
- run
- --reload
- "app/main.py"
and uncomment the line above
# command: sleep infinity # Infinite loop to keep container alive doing nothing
Then run docker compose watch and in new terminal, attach to the container with docker compose exec backend bash.
Now you can see something like
root@7f2607af31c3:/app#
You are inside the backend container and can run alembic commands
Beta Was this translation helpful? Give feedback.