diff --git a/annotation_app/Dockerfile b/annotation_app/Dockerfile
index 233cdd6..1a06b43 100644
--- a/annotation_app/Dockerfile
+++ b/annotation_app/Dockerfile
@@ -11,5 +11,5 @@ ENV SECRET_KEY="random_secret_key"
 
 EXPOSE 5050
 
-# CMD ["python3", "app.py"]
-ENTRYPOINT ["tail", "-f", "/dev/null"]
+CMD ["gunicorn", "--bind","0.0.0.0:5050","app:app"]
+#ENTRYPOINT ["tail", "-f", "/dev/null"]
diff --git a/annotation_app/initial.py b/annotation_app/initial.py
index 2f900dd..082c088 100644
--- a/annotation_app/initial.py
+++ b/annotation_app/initial.py
@@ -15,8 +15,9 @@ if __name__ == '__main__':
 
         try:
             with open(os.path.join('dataset', 'final_id_v2.jsonl'), encoding='utf-8') as file:
-                data = [json.loads(line) for line in file]
-                db.session.add(Samples(data['text']))
+                for line in file:
+                    data = json.loads(line)
+                    db.session.add(Samples(data['text']))
 
             db.session.commit()
             print('Data sucessfully inserted')
diff --git a/annotation_app/models.py b/annotation_app/models.py
index 165cba9..f8514f6 100644
--- a/annotation_app/models.py
+++ b/annotation_app/models.py
@@ -33,7 +33,7 @@ class Samples(db.Model):
     __tablename__ = 'samples'
 
     _id = db.Column("id", db.Integer, primary_key=True)
-    text = db.Column(db.String(512), nullable=False)
+    text = db.Column(db.Text, nullable=False)
     annotations = db.relationship('Annotations', lazy=True, backref='sample')  # corrected relationship and added backref
 
     def __init__(self, text):
diff --git a/annotation_app/requirements.txt b/annotation_app/requirements.txt
index 5bf2d49..0fcb387 100644
--- a/annotation_app/requirements.txt
+++ b/annotation_app/requirements.txt
@@ -12,3 +12,4 @@ typing_extensions==4.10.0
 Werkzeug==3.0.1
 zipp==3.18.1
 psycopg2-binary
+gunicorn