Docker Container Running But it throws the error Template does not Exist

Hi I'm New In Docker I Have Created A Django Application Its Running in Local machine Good But When I try To run In docker Container its Run Properly But When I sent Request The Found The Error Template Does Not Exist

#FROM ubuntu:latest
FROM ubuntu:latest
FROM python:3.8-slim-buster
#COPY requirements.txt requirements.txt

#RUN pip3 install -r requirements.txt
#CMD python . / runserver"""
# pull the official base image

# set work directory

# set environment variables

# install dependencies
RUN apt-get update&& \
    apt-get -y install sudo
RUN apt-get install -y tesseract-ocr
RUN apt-get install -y build-essential libpoppler-cpp-dev pkg-config python-dev mupdf

RUN apt-get install ffmpeg libsm6 libxext6  -y

RUN apt-get install -y default-jre
RUN apt-get install -y default-jdk

RUN apt-get update
RUN apt-get install -y python3-pip
RUN pip3 install --upgrade pip
#RUN pip3 install virtualenv
#RUN python3 -m virtualenv env
#RUN source env/bin/activate
COPY requirements.txt requirements.txt

RUN pip3 install -r requirements.txt
# copy project
COPY . /app


CMD ["python3", "", "runserver", ""]

My Docker File Look Like that

version: "3"
       build: .
       command: python3 runserver
           - 8000:8000

Folder Structure

    Directory: E:\djangoproject\blogproject

Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
d-----        22-12-2022     19:39                Blog
d-----        22-12-2022     19:39                Blogproject
d-----        22-12-2022     19:40                venv
-a----        22-12-2022     19:46         192512 db.sqlite3
-a----        21-12-2022     18:02            153 docker-compose.yml
-a----        22-12-2022     15:51           1097 Dockerfile
-a----        24-12-2021     13:00            689
-a----        20-12-2022     13:09            578 requirements.txt

My Template folder Is in Blog app templates/blog/templtes.html

when i run #docker-compose up then my image server is start but then i sent request from my brouser the i get the error page

TemplateDoesNotExist at /
Request Method: GET
Request URL:    http://localhost:8000/
Django Version: 3.2.8
Exception Type: TemplateDoesNotExist
Exception Value:    
Exception Location: /usr/local/lib/python3.8/site-packages/django/template/backends/, line 84, in reraise
Python Executable:  /usr/local/bin/python3
Python Version: 3.8.16
Python Path:    
Server time:    Fri, 23 Dec 2022 05:53:42 +0000
Template-loader postmortem
Django tried loading these templates, in this order:

Using engine django:

This engine did not provide a list of tried templates.
Error during template rendering
In template /app/Blog/templates/blog/base.html, error at line 0

some one can help me to fix this error

According to your Dockerfile, you must copy your django project from one folder to another and you didn't set workdir.

Instead of this:

COPY . /app  #here only you copied but didn't set where to copy

Try this way:

COPY ./app /app    #here copied Django project from one folder to another.

Note: Don't forget to re-build this Dockerfile.

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