diff --git a/README.md b/README.md
index c0aff72..c9b834b 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ reloaded automatically. The sqlite file will be stored in *tmp* so it
 can be inspected with tools like *sqlite3*. The switch *DEBUG* enables
 debugging during development.
 
-`docker run --rm --name rollerverbrauch -ti -v `pwd`/app:/app -v `pwd`/../rollerverbrauch_config:/app/config -v /tmp/pitstops/:/data -e DEBUG=True -p 5000:5000 rollerverbrauch`
+`docker run --rm --name rollerverbrauch -ti -v $PWD/app:/app -v $PWD/../rollerverbrauch_config:/app/config -v /tmp/pitstops/:/data -e DEBUG=True -p 5000:5000 rollerverbrauch`
 
 ## run in production
 `docker run --name pitstops -d -v /data/pitstops/:/data -v /configs/pitstops/:/app/config -p 80:5000 rollerverbrauch`
diff --git a/app/main.py b/app/main.py
index 77519c8..3bce806 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1,6 +1,12 @@
 import os
 from rollerverbrauch import app
+import logging
+
+
+def setup_logging():
+    logging.basicConfig(format='%(asctime)s [%(levelname)s]: %(message)s', level=logging.INFO)
 
 if __name__ == '__main__':
     DEBUG = 'DEBUG' in os.environ and os.environ['DEBUG'] != 'False'
+    setup_logging()
     app.run(debug=DEBUG, host='0.0.0.0')
diff --git a/app/rollerverbrauch/__init__.py b/app/rollerverbrauch/__init__.py
index e2eea31..fced2c7 100644
--- a/app/rollerverbrauch/__init__.py
+++ b/app/rollerverbrauch/__init__.py
@@ -9,7 +9,7 @@ from flask.ext.security import Security, SQLAlchemyUserDatastore, \
 from flask.ext.security import user_registered
 from flask_security.core import current_user
 from flask_sqlalchemy import SQLAlchemy
-
+import logging
 
 app = Flask(__name__)
 app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:////data/rollerverbrauch.db'
@@ -24,7 +24,10 @@ db = SQLAlchemy(app)
 mail = Mail(app)
 
 from rollerverbrauch.tools import \
-    VehicleStats
+    VehicleStats, \
+    db_log_add, \
+    db_log_delete, \
+    db_log_update
 
 from rollerverbrauch.forms import \
     CreatePitstopForm, \
@@ -57,6 +60,8 @@ def user_registered_sighandler(app, user, confirm_token):
     db.session.add(v)
     user.vehicles.append(v)
     db.session.commit()
+    db_log_add(user)
+    db_log_add(new_vehicle)
 
 
 @app.before_first_request
@@ -87,6 +92,7 @@ def edit_vehicle(vid):
     if form.validate_on_submit():
         vehicle.name = form.name.data
         db.session.commit()
+        db_log_update(vehicle)
         return redirect(url_for('get_account_page'))
 
     form.name.default = vehicle.name
@@ -108,6 +114,7 @@ def delete_vehicle(vid):
     if form.validate_on_submit():
         db.session.delete(vehicle)
         db.session.commit()
+        db_log_delete(vehicle)
         return redirect(url_for('get_account_page'))
 
     return render_template('deleteVehicleForm.html', form=form, vehicle=vehicle)
@@ -123,6 +130,7 @@ def create_vehicle():
         db.session.add(new_vehicle)
         current_user.vehicles.append(new_vehicle)
         db.session.commit()
+        db_log_add(new_vehicle)
         return redirect(url_for('get_account_page'))
 
     return render_template('createVehicleForm.html', form=form)
@@ -164,6 +172,7 @@ def create_pit_stop_form(vid):
         db.session.add(new_stop)
         vehicle.pitstops.append(new_stop)
         db.session.commit()
+        db_log_add(new_stop)
         return redirect(url_for('get_pit_stops', _anchor= 'v' + str(vehicle.id)))
 
     form.odometer.default = last_pitstop.odometer
@@ -195,7 +204,6 @@ def get_admin_page():
 @app.route('/account', methods=['GET'])
 @login_required
 def get_account_page():
-    print(current_user)
     return render_template('account.html', data=g.data)
 
 
diff --git a/app/rollerverbrauch/entities.py b/app/rollerverbrauch/entities.py
index 8c40b1c..f89069b 100644
--- a/app/rollerverbrauch/entities.py
+++ b/app/rollerverbrauch/entities.py
@@ -34,7 +34,7 @@ class User(db.Model, UserMixin):
     )
 
     def __repr__(self):
-        return '<User %r>' % self.email
+        return '<User id="%r" email="%r" ' % (self.id, self.email)
 
 
 class Vehicle(db.Model):
@@ -49,7 +49,7 @@ class Vehicle(db.Model):
         self.name = name
 
     def __repr__(self):
-        return '<Vehicle %r>' % self.name
+        return '<Vehicle id="%r" owner_id="%r" name="%r" />' % (self.id, self.owner_id, self.name)
 
 
 class Pitstop(db.Model):
@@ -65,4 +65,4 @@ class Pitstop(db.Model):
         self.date = date
 
     def __repr__(self):
-        return '<Pitstop %r km, %r l>' % (self.odometer, self.litres)
\ No newline at end of file
+        return '<Pitstop odometer="%r" litres="%r" date="%r" vehicle_id="%r">' % (self.odometer, self.litres, self.date, self.vehicle_id)
\ No newline at end of file
diff --git a/app/rollerverbrauch/tools.py b/app/rollerverbrauch/tools.py
index a6281dc..0a51317 100644
--- a/app/rollerverbrauch/tools.py
+++ b/app/rollerverbrauch/tools.py
@@ -1,3 +1,6 @@
+import logging
+
+
 class VehicleStats:
     def __init__(self, vehicle):
         self.name = vehicle.name
@@ -16,3 +19,15 @@ class VehicleStats:
             self.overall_distance = vehicle.pitstops[-1].odometer - vehicle.pitstops[0].odometer
             self.average_distance = self.overall_distance / (self.pitstop_count - 1)
             self.average_litres_used = 100 * (self.overall_litres - vehicle.pitstops[0].litres) / self.overall_distance
+
+
+def db_log_add(entity):
+    logging.info('db_add: %s' % str(entity))
+
+
+def db_log_delete(entity):
+    logging.info('db_delete: %s' % str(entity))
+
+
+def db_log_update(entity):
+    logging.info('db_update: %s' % str(entity))