Docker FastAPI Deploy Error: Health Checks, but I have /health route

I try to set up CD for my fastapi app using digital ocean app and digital ocean private container registry

My desired pipeline:

  1. Build docker with github actions when github receives a push to main branch
  2. Push docker to digital ocean private container registry
  3. Digital ocean app run deployment with new docker

I stuck at step 3, because I always get Deploy Error: Health Checks.
My Health check settings at digital ocean.
When I run my app locally

How I run my fastapi app:

poetry run uvicorn supa_dupa_api.main:app --port 8080 --host '::' --workers 1

Digital Ocean build logs:

Skipping virtualenv creation, as specified in config file.
INFO:     Started server process [3]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://[::]:8080 (Press CTRL+C to quit)

Please help me. How I can avoid this error? the service is working, but crashes after a few minutes due to this error

Additional information:

  • I tried default settings for health checks
  • I tried a different port



  LC_ALL=C.UTF-8 \

COPY . /workspace

RUN poetry install -n --without dev


CMD poetry run uvicorn coruscant.main:app --port 8080 --host '::' --workers 1

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Bobby Iliev
Site Moderator
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October 24, 2022

Hi there,

As far as I can see you are starting your service on port 8080 and also exposing that in your Dockerfile.

Have you tried to set that port in the App Platform heath check definition as well?