ModuleNotFoundError: No module named 'app' fastapi docker

Question

FROM python:3.8
WORKDIR /app 

COPY requirements.txt /
RUN pip install --requirement /requirements.txt

COPY ./app /app

EXPOSE 8000
CMD ["uvicorn", "app.main:app", "--host=0.0.0.0" , "--reload" , "--port", "8000"]

when i used

docker-compose up -d
ModuleNotFoundError: No module named ‘app’

the folders in Fastapi framework:
fastapi
- app
  
  -main.py
```
   language_detector.py
```
Dockerfile
docker-compose

Asked By: Ben cheikh

||

Source

Answer 1

Try creating the /app folder before

FROM python:3.8
RUN mkdir -p /app
WORKDIR /app 

COPY requirements.txt /
RUN pip install --requirement /requirements.txt

COPY ./app /app

EXPOSE 8000
CMD ["uvicorn", "app.main:app", "--host=0.0.0.0" , "--reload" , "--port", "8000"]

And launching it:

docker-compose up –build

Answered By: a.civit

Answer 2

CMD ["uvicorn", "main:app", "--host=0.0.0.0" , "--reload" , "--port", "8000"]

Your work directory is /app and the main.py file is already there. So you don’t need to call app.main module. Just call main.py script directly in CMD.

Answered By: Raisul

Answer 3

The issue could likely be caused by how you define the volume mounts on docker compose:
More on mounts here

Answered By: Antony

ModuleNotFoundError: No module named 'app' fastapi docker

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