Flask in Docker
To publish your own app, mount your app to /app, and provide FLASK_APP environment variable with the correct value.
Eg.
docker run --rm -it -v $(pwd)/myapp:/app -e FLASK_APP=myapp:app -p 127.0.0.1:8080:8080 ghcr.io/seravo/flask:latest
if you had app code like
myapp/myapp.py:
from flask import Flask
app = Flask(__name__)
@app.route("/")
def some_view():
return "Hello myapp!"
now try to open http://127.0.0.1:8080/ , and you should see your app running.
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)/myapp:/app -e FLASK_APP=myapp:app -e FLASK_RELOAD=true -p 127.0.0.1:8080:8080 ghcr.io/seravo/flask:latest
Now, if you modify the code in myapp.py and save, the app will reload and your changes will be in effect.