Flask project template
To run hello world app, :8080 provides HTTP endpoint (to uWSGI), and :9000 provides uWSGI endpoint. So, let's try accessing via HTTP:
docker run --rm -it -v $(pwd)/app:/app -e FLASK_APP=hello:app -p 127.0.0.1:8080:8080 ghcr.io/seravo/flask:latest
now try to open http://127.0.0.1:8080/ , you should see familiar greeting.
To publish your own app, mount your app to /app, and provide FLASK_APP environment variable with correct value.
Eg.
docker run --rm -it -v $(pwd)/app:/app -e FLASK_APP=app:app -p 127.0.0.1:8080:8080 ghcr.io/seravo/flask:latest
if you had app code like
app/app.py:
from flask import Flask
app = Flask(__name__)
@app.route("/")
def some_view():
return "Hello myapp!"
Usually you shouldn't expose this HTTP endpoint directly to internet, but use eg. ypcs/nginx:latest as a reverse proxy.
By default, you can manually reload the application by touching /tmp/reload-app. If you want your application to reload automatically after every save, set FLASK_RELOAD as true.
docker run --rm -it -v $(pwd)/app:/app -e FLASK_APP=app:app -e FLASK_RELOAD=true -p 127.0.0.1:8080:8080 ghcr.io/seravo/flask:latest
Now, if you modify the code in app.py and save, the app will reload and your changes will be in effect.
Tests can be ran by executing pytest-3 inside the container. For example, to run the tests for hello.py you would do it like this:
docker exec -t {CONTAINER_NAME} pytest-3 hello.py -vv
Test output should look something like this:
platform linux -- Python 3.9.2, pytest-6.0.2, py-1.10.0, pluggy-0.13.0 -- /usr/bin/python3
cachedir: .pytest_cache
rootdir: /app
collected 1 item
hello.py::test_hello PASSED