This is really a short explanation. Please be patient.

Initial setup

Set required environment variables:

• DJANGO_DEBUG=true|false
• DJANGO_SECRET_KEY=django_random_secret

User's environment variables in OpenShift can be set by creating files like this:

echo -n false > $OPENSHIFT_HOMEDIR/.env/user_vars/DJANGO_DEBUG
echo -n 'xxxxx' > $OPENSHIFT_HOMEDIR/.env/user_vars/DJANGO_SECRET_KEY

Set required database records in table Misc:

• webservice_token - random token to authenticate Telegram request to our web service
• telegram_token - bot token given by BotFather
• bot_user_id - user ID of the bot

Register webhook:

curl 'https://api.telegram.org/bot${TELEGRAM_TOKEN}/setWebhook' \
 --data 'url=https%3A%2F%2F${ADDRESS_OR_DOMAIN}%2Fupdate%2F%3Fauth%3D${WEBSERVICE_TOKEN}'

The ${variable} above should be replaced directly with the correct values, because single quoted string will not be expanded by the shell.