update README.md

flask run

```

Also, you have to set up the LDAP server in Flask. At the moment we are required to use a VPN or `lennonproxy` to access the LDAP server. The following command forwards the LDAP server to your local machine:

```sh

sudo ssh -D <your_forwarded_port> -p 80 <username>@lennon.cl.uni-heidelberg.de -L 636:ldap2:636

python3 -m venv venv

source venv/bin/activate

pip install -r requirements.txt

export FLASK_APP=portal

alembic upgrade head # to create (and update!) the database

flask run

flask shell

```

```python

>>> from portal.model import *

>>> from portal import db

>>> l = ldapDirectory()

l = LdapDirectory()

l.url = "ldaps://ldap2.cl.uni-heidelberg.de"

l.base_dn= "ou=accounts,dc=cl,dc=uni-heidelberg,dc=de"

db.session.add(l)

db.session.commit()

exit()

```

The app should run without problems now.

Also, if you are using an Apple device, please deactivate the "AirPlay Receiver" as it might cause problems with the LDAP connection.

---

#### Wichtig:

#### Important:

Alembic must always be up to date in order to update the database schema.

Please run `alembic upgrade head` after pulling changes from the repository.