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Docker Test for creating a dev server for an existing project. (I am going to test it with ticha project) Here are the steps to setup a dev server: 1. Install Docker to your computer/laptop 2. Create a working directory for projectname-Docker 3. Inside the directory, create a txt file named Dockerfile with the following contents: For Flask: # Use an official Python runtime as a parent image FROM python:2.7-slim # Set the working directory to /app WORKDIR /app # Copy the current directory contents into the container at /app ADD . /app # Install any needed packages specified in requirements.txt RUN pip install -r requirements.txt # Make port 80 available to the world outside this container EXPOSE 80 # Define environment variable ENV NAME World # Run app.py when the container launches CMD ["python", "app.py"] # change the name of "app.py" accordingly For Django: FROM python:3 ENV PYTHONUNBUFFERED 1 RUN mkdir /code WORKDIR /code ADD requirements.txt /code/ RUN pip install -r requirements.txt ADD . /code/ *Note: For Django, besides using Dockerfile, we also need to create a docker-compose.yml with the following contents: version: '3' services: db: image: postgres web: build: . command: python3 manage.py runserver 0.0.0.0:8000 volumes: - .:/code ports: - "8000:8000" depends_on: - db 4. Make sure that the Dockerfile, the app.py, and the requirement.txt in the same directory 5. Run the command docker build -t "projectname" 6. Run the app docker run -p 4000:80 "projectname" You should see a notice that the app is running at http://localhost:4000. 7. To share your image, you should tag the image so Docker can find it by running this command: docker tag image username/repository:tag # replace username with your username, repository with your repository, and tag name. 8. If you want to publish the image, you should push the tagged image to the repository by running this command: docker push username/repository:tag Once completed, your image is publicly visible. 9. To pull the image, just run this command: docker run -p 4000:80 username/repository:tag because Docker will automatically pull the image from the Docker repository.