diff --git a/Dockerfile b/Dockerfile
index 692795a..4c87b45 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,5 +7,5 @@ RUN pip3 install -r requirements.txt
 
 COPY . /app/
 EXPOSE 5000
-CMD ["python","app.py"]
+CMD ["gunicorn", "-b", "0.0.0.0:5000", "app:app"]
 
diff --git a/utils/createDf.py b/utils/createDf.py
index fa6d1b9..ca87189 100644
--- a/utils/createDf.py
+++ b/utils/createDf.py
@@ -11,8 +11,6 @@ def createDf(requestFiles):
         df = read_excel(file,dtype=str)
     elif (file.filename.endswith(".ods")):
         df = read_excel(file,engine="odf",dtype=str)
-    elif file.filename.endswith(".json"):
-        df = read_json(file, dtype=str)
     else:
         return False,"Please upload valid file format"