how to set up github actions for dart and python - github-actions

Question

I want to set up a github actions container with both dart and python. I have used the dart actions template and installed python. However, I keep getting an error saying
WARNING: The directory '/github/home/.cache/pip' or its parent directory is not owned or is not writable by the current user. The cache has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Requirement already satisfied: pip in /__t/Python/3.8.7/x64/lib/python3.8/site-packages (21.0.1)
/__w/_temp/95e6ebc6-5365-42a8-8197-9f5d14c042d3.sh: 2: /__w/_temp/95e6ebc6-5365-42a8-8197-9f5d14c042d3.sh: pip: not found
Here is my yaml file:
name: Dart
on:
push:
branches: [ master ]
pull_request:
branches: [ master ]
jobs:
build:
runs-on: ubuntu-latest
# Note that this workflow uses the latest stable version of the Dart SDK.
# Docker images for other release channels - like dev and beta - are also
# available. See https://hub.docker.com/r/google/dart/ for the available
# images.
container:
image: google/dart:latest
steps:
- uses: actions/checkout#v2
- name: Set up Python 3.8
uses: actions/setup-python#v2
with:
python-version: 3.8
- name: Print Dart SDK version
run: dart --version
- name: Install dependencies
run: |
python -m pip install --upgrade pip
pip install flake8 pytest
if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
cd integ_tests
dart pub get
# Run uvicorn
- name: Run uvicorn
run: |
cd fastapi/
uvicorn app.main:app --reload --port 8000
# run my test
- name: Run dart test
run: |
cd integ_tests
dart lib/main.dart --dry true
Additionally, I'm concerned that running uvicorn inside the container will make the container hang (since it would never exit). If this is the case, how do I go about starting a localhost with uvicorn without letting the container run forever?
EDIT: full log
If I run it with sudo I get an error saying
/__w/_temp/2ffb7222-f1dd-4273-870c-c85ac57b9da3.sh: 1: /__w/_temp/2ffb7222-f1dd-4273-870c-c85ac57b9da3.sh: sudo: not found

Answer 1

I suspect the problem here is still that you are attempting to run pip inside the container. Here's why. The dart version is provided after the setup-python but before pip installation. I would change the order to ensure that dart --version step is before the "Run dart test" step. This will ensure that all python build and configure is done right after setup-python
I looked at a Python build of mine and on the step of upgrading pip, I get this:
> Run python -m pip install --upgrade pip
Requirement already satisfied: pip in /opt/hostedtoolcache/Python/3.7.9/x64/lib/python3.7/site-packages (21.0.1)
Collecting pytest
I believe this will have uvicorn running outside the container (i.e., in the runner VM).