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The dotnet app can be published using the following command (note that the location will be in root/publish)

run from root dotnet publish -c Release -o ../publish && chmod +x publish

The app is hosted on Heroku. Instructions to create, host, release

1. Install the Heroku CLI https://devcenter.heroku.com/articles/heroku-cli#download-and-install .
2. Login heroku login
3. Container login heroku container:login
4. Create an app heroku apps:create {appName} --region eu
5. Push an app (from Dockerfile) heroku container:push web -a {appName}
6. Release an app heroku container:release web -a {appName}
7. View release heroku container:release web -a {appName}
8. View logs heroku logs --tail -a {appName}

Heroku dynamically picks the port to use for the app, this means we need to assign our app to this port.

The port will be assigned to the $PORT variable, therefore available at run time. To set the port at runtime in dotnet projects assign the following value ASPNETCORE_URLS=http://*:$PORT

Note: this must be at runtime (not build), therefore will be inline with the CMD arguemnts